Permalinks not working after migrating servers

I am no expert at all on programming & coding, but circumstances dictate that I have to do all this myself. So bear with me.

I have a few wordpress blogs running on a server. Before, both the domain name and the server were hosted by godaddy. The domain name remains there, but the server has actually moved to a different host.

I migrated my files over, loaded the databases and updated the config file. My wordpress blogs load fine- but the permalinks just open a blank page and never load.

I don’t know if this complicates things, but my wordpress sites are using domain masking. In theory, since the domain name hasn’t changed at all, the masking/forwarding shouldn’t matter, right? But I don’t know for sure.

For example, my site:
https://www.whamerica.com
is being masked/forwarded to https://www.foolfactory.com/whamerica

that works fine, but if you click on the permalink:
https://foolfactory.com/whamerica/comics/87

nothing happens. FYI, that permalink is one I created just now, AFTER the migration, which means even on new posts, the permalink isn’t working. I’m sure there’s an obvious solution, but I know nothing about wordpress. Any step-by-step explanation would be most appreciated, as the hosting company doesn’t troubleshoot wordpress issues directly.

thanks!