After my most recent (and sadly irreversible according to the tp-link firmware webpage) firmware update I am new having connectivity issues:

Many of my devices on the 2.4 GHz band either connect and drop or cannot connect at all.

NB: I do not have a separate guest network or IoT network on the 2.4 Ghz band.

I verified that I have the same settings with 20/40 bandwidth and b/g/n/ax mixed mode. I've tried turning off various settings such as MU-MIMO and TWT without any improvement.

I don't know if anyone else is having these issues after the update.

I have tried many reboots and and hard resets with unplugging to no avail.