Hi @KeldSor ,
First of all, really sorry about all the inconvenience you have encountered.
I agree with what @Andy David - MVP mentioned above, POP doesn't support downloading contents of subfolders. Here are some similar threads of this issue I found, you could also get this via their comments and answers.
POP Mail Folders are not showing
Inbox folders missing under POP3 Account
Besides, glad to hear that you have already nearly got it to work, manually adding these subfolders is indeed a feasible workaround. Also, please remember to back up your datafiles of pop email accounts, those manually created folders will not be synced and only stored locally.
By the way, would you mind marking a helpful reply you think as answer so that others who might have a similar question can benefit from your thread? Thanks for your understanding and support.
Best regards.
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