iPhone 15 stickers problem

I have a brand new 15pro max 256gb

with latest software update 17.2

I have a sticker problem! If a want to create my own stickers with the “+” symbol they shortly appear in an always empty list and disappear immediately again after 1 or 2 seconds , leaving the list empty … So I can create my own stickers but they don’t stay in the list.

I've tried everything I found on the internet.

• hard reboot
• reset all settings
• clear cache
• Log out Apple ID
• turn of iMessage

all the above in all possible different chronological orders…

nothing works!!!

ps: it works perfectly fine on my 14pro max also on my 13. So it’s not that I don’t know how to do it ;)

apple fix this please !