That subfolder works perfectly fine n that computer, but I need it on all my computers.

I have several computers with Thunderbird installed and linked to the same email account. The following sequence of actions create the problem: 1) I create an Inbox subfolder on one of the computers. That subfolder works perfectly fine n that computer, but I need it on all my computers. 2) On a different computer I select "File/Subscribe..." menu item. 3) The new folder is shown there and is ticked as subscribed. I unsubscribe and subscribe it again. 4) Nothing happens. I still do not have my subfolder on that computer. 5) Moreover, if I try to create a subfolder with the same name, nothing happens. New subfolder does not show up. In the old versions of Thunderbird (v57 or something), steps 2,3 resolved the situation and new subdfolders showed up. But now this trick does not work anymore. Do you have any idea how to fix that?