Two-factor authentication adds an extra layer of security to your account and all Squarespace sites on your account. When logging into your account, you’ll enter an authentication code as an additional step. Depending on your settings, the code you enter will be generated by an authentication app on your smartphone or sent to you via text message. After you log in, you can skip two-factor authentication for 30 days.
On your computer, type the 6-digit code generated by the hardware token in the Authentication Code field, then click Next.
In the window that appears, choose a backup method. This is useful if you lose your token. You can enable two-factor authentication via text message or print backup codes.
As per SquareSpace "Codes generated expire at 60 seconds. After a code expires, you can't use it to log in". This means that the authentication system does not support time drift as per RFC 6238. For this reason, we recommend using our programmable tokens with unrestricted time sync: miniOTP-2 or OTPC-P1.