Information please.

Is possible with Pro version to import messages and files/folders from Mailbird. Been using WLM until problems arose with it. Mailbird ignore questions they are unable to answer or failings in the system. 

we do not have an option for direct import from MailBird, but you should still be able to import your settings from WLM.
If this is not an option, you can always import your data manually - setup your IMAP/Exchange accounts and they will synchronize with your mail server data.
If you have Local data stored in MailBird, you can export those as EML files (for messages), CSV or VCF for Contacts, etc, and then Import those using the File>Import menu options.