RedMi note 8 T usses tathering

Hello everyone, I wanted to ask you my problem that I have been struggling with for two days. I bought the GL-MT300N-V2-ce1 mini-router and before I updated my mobile the tathering worked great. Now the router seems to no longer detect the phone in tathering.
I have already tried with other phones and it works.

Can anyone help me out?

I upgraded the router to verse 3.211.

Thank you in advance.

Does the RedMi Note 8 tethering work properly when connected to a laptop?

You updated your phone or router then it does not work?