This morning, Thunderbird stopped retrieving email from my G-Mail account. I've check my G-Mail, and new messages are being received in my inbox. (Older emails received earlier are still listed in my inbox.) As of this morning (11/30/20) no new emails are being downloaded to my inbox... the "working" hourglass symbol is stuck. I've tried deactivating my antivirus, and still no email downloads. Are others experiencing this issue?