Hey there and welcome to the Samsung UK and EU Community Forum
One UI8 stable has not been out for a month as you indicate. It came out last week.
When you say you withdrew from beta, did you follow the full withdrawal process?
SmartSwitch
Withdraw
Downgrade to One UI7
A few members who withdrew from beta are having issues. This is why we don't recommend beta for your main device.
I am not employed by Samsung nor do I receive any remuneration as a Samsung Members Star.
My device is an S25 Ultra.