I’m confused.
your profile says Sketchup 2022
the title says sketchup 23.1.340
and your fix is to open sketchup 23 (I thought 23 had the issue ?)
which one is the problematic one ? 
yes.
A basic subscription allows you to connect on 2 sketchup at the same time.
it can be 2 sketchup on 2 machines (one on each). or 2 sketchup on the same machine.
Right now I have 24 on my mac and 24 on my PC. if I decide to open 23 on my mac, it’ll count as a 3rd activation.
The reason you get this message is because you’re trying to connect on a third sketchup, the updated one. The server still sees the unupgraded one (it’s likely due to the fact that we only have to connect every 28 days, the server doesn’t know you’re not using the old one yet)
So either reopen the old sketchup you don’t need, and log off.
Or follow these steps to deactivate everything. you’ll still need to log off and on again after that.