Hi @babylon1999,
Thanks for your suggestion — the orders page is working after deleting the tables and several following steps.
I deleted the custom orders tables as you suggested.
I then went back to the “Woocommerce > Settings > Advanced > Features” page and clicked the “synch pending orders” link, then toggled on “enable compatibility mode” and clicked “save changes.”
I then switched to “high performance order storage” and “saved changes”.
The orders page now works, and the URL ends in “wc-orders”, as was originally mentioned.
I still have “enable compatibility mode” selected. Should I keep it this way or disable? (see screenshot for current settings: https://prnt.sc/2mGFeGoboM9_)