Basically, Apple is using the browser language settings to choose interface language, so if you want to see it in English then you have to set your browser language settings to English. Of course, that it's a ****** solution, as then you have many other sites detecting English too. In general is a bad approach for this and many other sites, where you cannot override language settings. As Apple seems to don't care about this, the only more or less acceptable solution is installing another browser, set that browser settings to English (or the language you prefer), then use that browser for the App Store Connect site. I use Chrome normally, with language settings in Spanish, but I have Firefox language set to English. When it's important to see the English interface, I use Firefox.

Google Drive issue didn't get fixed installing MacOS Big Sur 11.3 Beta 7 today, the only difference is now Google Drive ask to be approved at "Privacy and Security" but there is no option there to approve it anymore. Before installing the beta version, I was in an endless loop where I could see the option to approve the system extension, then asked to reboot, then asked to approve it, approve it, reboot, asked to approve.... Now I get asked by Google Drive to enter system preferences to approve the system extension, but there is no option to approve it. Neither before not now, Google Drive works anymore.

Same problem here win MacBook M1 2020, MacOS Big Sur 11.2.3 (20D91), and Google Drive. Upgrading to 11.2.3 fixed a similar problem I had with an update from Apple Inc, which was listed together with the one for Google Drive, now the one from Apple ha gone, but the one from Google remains in endless "give permission/reboot(/give permission/reboot" loop.