Hello @Hukivskyi, Bohdan,
welcome to this moderated Azure community forum.
It seems you hit some limit in the service.
This can either be a hard (technical) limit or a soft limit (Microsoft made some decision for customers).
Soft limits are normally not a problem for most customers but Microsoft is very interested in edge cases and special usecases.
I suggest creating a support ticket where you explain why you need this limitation to be lifted (if possible).
If the response helped, do "Accept Answer". If it doesn't work, please let us know the progress. All community members with similar issues will benefit by doing so. Your contribution is highly appreciated.