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Unable to download messages on my email provider to my Thunderbird inbox

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When I try to download messages from Proton’s inbox, I get this message: “Thunderbird. The current operation on ‘Inbox’ did not succeed. The mail server for account loiscodling@proton.me responded: no such mailbox.. .”

If I access the account directly through Firefox, the inbox is visible with a large number of files in it. Mail in all the other folders on Proton has downloaded correctly to Thunderbird, but not the inbox.

When I try to download messages from Proton’s inbox, I get this message: “Thunderbird. The current operation on ‘Inbox’ did not succeed. The mail server for account loiscodling@proton.me responded: no such mailbox.. .” If I access the account directly through Firefox, the inbox is visible with a large number of files in it. Mail in all the other folders on Proton has downloaded correctly to Thunderbird, but not the inbox.

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