I am currently using Thunderbird (128.6.0esr) on a Mac with OS Sonoma (14.7.1). I have used Thunderbird for many years with a Gmail account on both Windows and Mac machines, and it has always worked well. But a couple of days ago when I tried to open Thunderbird it went into some kind of loop. The MacOS spinning beach ball appeared and would not go away no matter what I did or how long I waited. The only way out was to Force Quit Thunderbird. Rebooting the Mac and trying again produced the same results. I have logged into the Gmail account on the web and had no trouble accessing it. But every time (and I have made many attempts) I try to load Thunderbird the spinning beach ball appears again. I cannot check any of the various settings that Help articles have suggested checking since Thunderbird will not load at all. If anyone can suggest how to resolve my problem, I would greatly appreciate it.