Here is a solution provided to get around that problem, see below.
(Below is a message you may have seen in the FAQ of Line official website):
Requirement:
- You will need a new phone number (which has never been used to register on Line before), so Line will count your ID as anew
- Line (the one you currently use)
- Line Lite [HERE]
- Make sure to keep your friends Line ID somewhere safe to add them back, because once the process done, you will start with 0 friends.
Now, Follow the steps:
1. Clear data of your Line, and go Register your Line Account with your Phone Number (the old one).
2. Go to Setting, Accounts, Unlink Facebook from your account.
3. Use another Line account to register your phone number or ask another line user (friend) to do it.
4. Once done, your account will be wiped out.
5. Now Install Line Lite [HERE].
6. Login Line Lite via your Email and the password your used for the Original Line.
7. Line lite will ask you to register a new phone number.
Register with a New phone number (/!\ which has never been registered to line before /!\).
9. Once done, you will be linked to Line Lite. Now is time to come back to use the Original Line.
10. Login to Original line with the (New) phone number you registered to Line Lite.
Now you should be connected to your Line account on Original Line app, and you can add friends again.
