Hello Firefox Community, I'm reaching out because I've encountered an issue while trying to install an add-on on Gmail, and I'm hoping someone here might be able to help me out. The issue happens with any add-on, but the one I wanted to install is (https://workspace.google.com/u/0/marketplace/app/todoist_for_gmail/815972520808) When trying to install an add-on, I get directed through to give the add-on permissions and I get thrown to the following error 400 each time (see screenshots). I've already tried a few troubleshooting steps, such as clearing my browser cache and cookies, disabling other add-ons/extensions, and even restarting my browser, but unfortunately, none of these actions have resolved the issue. I'm sure this problem is a more general issue with Firefox. I reached out go Google and they could not help and the installation was successful on Chrome. I also tried installing other add-ons and a similar problem occurs. If anyone else has experienced a similar problem or has any suggestions for troubleshooting steps I can try, I would greatly appreciate your insights. Additionally, if there's any specific information or logs I should provide to help diagnose the issue further, please let me know, and I'll do my best to provide whatever is needed. Thank you in advance for any assistance you can offer! Best regards, Kamil