Enter the Activation Code on the start screen in this text box:
You can also swipe left to find your book in the Catalogue.
Choose your book by clicking it.
Enter your code using numbers and capital letters.
If you can’t activate the book for any reason, please contact us in Support Center in the App. We will do our best to help you.

IMPORTANT! To make sure you are using exactly DEVAR book, find one of the logos on the cover
If you have our book:

• Find your book in DEVAR App. You can 1) scan QR code on the book 2) enter Activation Code or the title in the text box on the start screen or 3) swipe the catalogue until you find it. The catalogue is arranged by type of products.
• Choose the book by clicking it. Tap “Activate” button and enter the Activation Code. If necessary check “General questions” → “Where to enter the Code”. Please, wait until the book is downloaded. The camera will start automatically.
• Scan the pages and enjoy your time.

For any technical questions, please contact us in Support Center in the App.
If you don’t have our book, you can buy it any way described in “General Questions” → “Where can I buy DEVAR products?
For any questions, please check FAQ and contact us in Support Center in the App.

Read the activation instruction in “How to use this book” section in the beginning of your book.

• The Code is under the scratch off label on back cover.
• In some books this code is printed in “How to use this book” section without scratch off label.
• If the Code is out of order after scratching off, please contact us in Support Center and provide photos of front and back covers. We either restore your Code or provide a new one.
• If you can’t find a Code in your book at all, please contact us in Support Center. We will provide a new one.
• If your book is activated by QR code, scan it with your camera and tap this button.

There are few ways to do this:

• Enter the title of the book in the text box on the start screen.
• Enter the Activation Code in the text box on the start screen.
• Scan the QR code on your book.
• Find your book in the Catalogue. All the products are divided into sections according to types: books, cards, e-books, etc. You can swipe and scroll the menu to find the necessary product.
  IMPORTANT: check that title of your book matches the title in the App. Some titles are similar. To be sure compare the book cover with icon in the App, they should be the same.
  If you can’t find your book, try to change the country in settings. Different countries have different display of books.
  To change the country:
  • Find “Help” button on the start screen.
  • Tap “Change” the country.
  • Choose a flag according to the language your book is printed in.
  • Tap “Accept”.

If you still can’t find your book, please contact us in Support Center. We will figure it out.

There are several ways to purchase our books:

• Look in your local book stores.
• Or buy right inside the app:
  • Choose any book of your liking
  • Find the “lock” icon in the lower menu and tap on it
  • You’ll see this pop-up window
  • Press “buy” and follow the instructions
  • Instead of lock icon you’ll see a printer icon, tap on it. The book will be saved as pictures into your phone gallery
  After this you’ll be able to print it and use it as a regular printed book

Make sure you’re trying to open correct book – does its icon match with your book’s cover?
Even if you think you’re doing everything right, double check it, because some codes can be universal, e.g. they can activate several books. Maybe you just activated the wrong one.
If you’re sure that you’ve done everything right, try to flatten the page and set up lighting; maybe, our app just doesn’t “see” the pages of your book.
If you still can’t get it to work – contact us via support chat and we’ll help you :)

This case means only one thing – our app “sees” your book, but you hold your device wrong.
How to hold it? The whole page should be visible through the camera. Then the red square will appear on top of that page. After this, start slowly moving your device towards the page but keep the red square inside the borders of the screen.
If these tips don’t help you, try to flatten the page, set up brighter lighting and hold your device parallel to your book.
If it still doesn’t work, probably, it’s a bug. Contact us via support chat.

Usually such error message tells you that you’ve entered your code into the wrong book, and now are trying to activate another one. Just contact us through support chat and send us:

• Code from your book, which you’re trying to enter
• Exact title of your book (or just a photo of the cover)

This means that you’re probably entering the wrong code. Remember, in our codes 3rd and 4th symbols are written in capital Latin letters.
Or you’re entering your code into the wrong book or in the wrong app.
Double check everything. If you still get the error message, contact us via support chat and we’ll see what we can do.

In general, this section is for Android devices.
Before getting into details, try rebooting the device and launch our app before anything else.
The amount of RAM is the main requirement for our app. The bare minimum is 512Мb of free RAM.
lf you don't know your device's specifications, you can look them up in your device settings:

• For Android 4.х and 5.х go to Settings -> Apps -> Running. You’ll see your RAM parameters at the bottom.
• For Android 6.х and 7.х go to Settings -> Memory, there you will see your RAM parameters.

If you have а minimum of 512Мb RAM, but the app keeps crashing, there can be several reasons for that:

• Performance of the rest of your components isn't enough. ln this case, we can't help you.
• Performance of your device is bordering on the minimum - in this case try closing all the background apps (antiviruses, messengers, etc.).
• Make sure you have enough space on your device or SD card. The app itself will take around 35Мb, and each book will take up to 100Mb.

If this instruction didn't help you, contact us via support chat, and we’ll try to figure out what the problem is.

Don't worry! Contact us via support chat and we will unblock your device.

• Make sure you have the sound enabled on your device. Note, that general volume and media volume are two separate sliders.
• If you're sure that you have sound enabled, your speakers are working and so on, but you still have no sound, then answer the following questions:
  • There's no sound in а particular book or in the app in general?
  • Is there sound in the main app interface? For example, there's а sound during loading, on each button tap, etc.

We're very sorry that you have encountered such a problem :( Unfortunately, this sometimes happens but there's no need to panic.

• Make 2 photos of both book covers (so we can see the title of the book and the corrupted code)
• Send us those photos via support chat

lf we can, we'll just restore your code. If not - then we'll just send you а new one!