utility forgets router

new router utility forgets my router with tablet reboot. old version downgrade fixed problem.

Which version of Router Utility are you using and on what OS?

Same problem.

I use version 2.2.1 build 2083 with samsung S22+

I can’t help you with that OS. Might be worth submitting a ticket to the nice folks at Peplink.
Please let us know what id learned. Router Utility is a valuable resource/tool.