In reply to Job.

Hello Job,

The WooCommerce account is in our client’s name; not mine.

I restored a backup (and because all of my plugins were set to enable updates) as soon as the backup completed it immediately re-upgraded the WooCommerce Add-ons plugin and the main WooCommerce plugin.

To my surprise, after I decided to proceed with the database update; my many Add-On fields reappeared and all is well. No more question marks in place of the products add-ons on the front-end.

Not sure what happened, but perhaps the 7.5 update went arwy??? Anyways, I learned my lesson, and I have shut off all WooCommerce plugin updates. I’ll manually apply them in the future as my client has a long-term contract with me.

Thank you for your reply Job and for your offer for assistance.