Squarespace Login, 2-factor authentication making me re-login every couple of hours?

I have a 2-factor authentication installed for my Squarespace Circle login, and since i've had it (years now), it goes through phases where it boots me out and forces me to login again, retrieving a new authentication code from my app every couple of hours or so.

It's happened 4 times today already, and done so as I'm in the middle of making updates to a client's site. Is anyone else facing this issue, or just me?