Hi, So I've got this gmail address that I would like to add to thunderbird. (imap/pop is on / two step validation is off / less secured access is on) I do Add Account, fill my address and password, then a web page pops up, with the Google logo and the mention 'one account. all of google'. This is the part where I should type my email address, then my password, then authorize Thunderbird to access my emails. I can't get through the type my email address part. I can type it, but when I validate it just reloads the page again, with the email address field blank. I type it again: same thing. If I type nothing and validate, a red message appears 'please type an email address or phone number'. My computer runs Windows 10 64 bits and latest Thunderbird version 78.11 64 bits. What I've already tried: -Clear thunderbird cache -Reinstall thunderbird -Rename the thunderbird folders in users/me/appdata/roaming AND local and did a full reinstall. I'm still in the same problem. Does the pop up webpage use a browser that I need to clear the cache off? I'm at a total loss, and couldn't find anything else helpful online. Thanks for your help.