Hi Implanti ,
Thanks for reaching out to us!
It seems like your issue is related to this topic.
https://community.buttonizer.pro/d/1195-viber-and-telegram-stopped-working
Could you try to change the +
in your phone number into a %2B
?
I tested it out locally and it seems to fix the issue on our end.
It will say that the number is wrong but it should still save the changes.
Let me know if this works for you! 😄