Payment Method Credentials Won't Save.

[HopeD]

Hello, I am using Joomla! 3.9.2, VirtueMart 3.4.2.
I've been using the First Data "egrfirstdatae4" payment method since our site launched. I switched our PHP version to 7.1 and noticed that a customer's order status was Pending and payment hadn't gone through.

I checked the payment configuration and our credentials for our payment method were gone. When I try to save them now, the page just refreshes and the fields remain empty. It is not exclusive to this payment method, either. Any time I try to save them, on any payment method, it doesn't work. I greatly appreciate any help.

[Jörgen]

Some plugin or extension that is not PHP 7 ready. Turn on full PHP error reporting in Joomla to see where it goes wrong.

Jörgen @ Kreativ Fotografi

[HopeD]

I couldn't see any errors and my hosting provider also said nothing was showing on their end. However, I looked and our system is showing 20 updates available and says the installed version is "Unknown"

I think this may be our problem? No clue what would have caused this.

[Jörgen]

Turn back to php7 and check if it works. Check if you have updated both vm core and vm aio. The list sais you haven't.
Jörgen @ Kreativ Fotografi

[HopeD]

What is strange is that the VirtueMart and VirtueMart AIO are showing as installed in my extensions. But they're version 3.4.2, the ones pending say "Unknown" version installed and 3.2.1 available.