Hi @JSW88,
Glad the original issue here is now sorted out.
About redirect issue, I can confirm it here. Although, rewrite rules is not needed by default unless you have special settings. Removing htaccess file is a good step.You should save your permalinks settings again to generate a new one. Check again after that.
If the issue still exist let’s check where it is coming from. You could try testing for a plugin conflict. You can do this by deactivating all third party plugins, and seeing if the problem remains. If it’s fixed, you’ll know a plugin caused the problem, and you can narrow down which one by reactivating them one at a time.
If this is not cause by any plugin, lets check your child theme too. Please try to switch from child theme to main theme. Check the issue again after that.
If any of that step did not work, it would be best to open a new thread. Then share credentials inside a secure note there so we can investigate further.

A new thread is advise so this one will be relevant to its title. Thank you.