Something is wrong with your server. Here's the log entry:
WARNING |20220712 01:05:16|Error received from the post-processing engine:
WARNING |20220712 01:05:16|cURL error 60: SSL certificate problem: certificate has expired
This happens when it tries to contact our site (www.akeeba.com) to act as a mediator to let your site get a new token from Google Drive. However, our SSL certificate has not expired. It will expire on October 22nd, 2022 — today is July 15th, 2022.
I would recommend talking to your host and ask them why accessing https://www.akeeba.com/oauth2/googledrive.php throws an error about an expired SSL certificate when we very obviously have a valid, NOT expired certificate on our site.
Nicholas K. Dionysopoulos
Lead Developer and Director
🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!