Critical Error viewing Reports #2

I have been getting having two issues for several weeks now. The first is that no matter what I do I can NOT set a TITLE or The DESCRIPTION for a payment form. I have tried numerous times on multiple forms I created. Every time I enter the Title in the “Form Title” field and click the Update button it saves “Post updated. View post” but the “Form Title” field remains empty. Exactly the same thing happens with the “Description” field. In the list of forms the Title is also missing and shows “(no title)”

The second thing is that the “Reports” do not work!! When I click the link it goes to the /wp-admin/edit.php?post_type=wpep_reports and it states: “There has been a critical error on this website. Please check your site admin email inbox for instructions.
Learn more about troubleshooting WordPress.”
However there is no email sent to the Admin email account.
(Please note that someone else reported the same issue previously but nothing was done)

I activated the Debug log then clicked the EasyPay Reports link which gave the above error. Here is what shows in the Debug log:
Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function “wpep_include_reports_scripts” not found or invalid function name
Stack trace: 0 /wp-includes/class-wp-hook.php(334): WP_Hook->apply_filters() 1 /wp-includes/plugin.php(517): WP_Hook->do_action() 2 /wp-admin/admin-header.php(118): do_action() 3 /wp-admin/edit.php(407): require_once(‘/home/xxkcun65n…’) 4 {main} thrown in /wp-includes/class-wp-hook.php on line 310

WordPress core
File: /wp-includes/class-wp-hook.php
Line: 310

The Debug logs do not show any errors for the first issue with the Form Title and Description.

PHP version 8.1.24 (Supports 64bit values)
Server version 10.5.21-MariaDB-cll-lve
WordPress Version 6.3.2

One final problem… recently someone tried to use a credit card fraudulently on a donation form which is connected to Square. They did multiple $0.10 amounts which should not have been possible as the “Other” field was set to a minimum of $5. This triggered a freeze on our Square account. (Square fees wiped out each donation)
How can I ensure that this can not happen again?

The page I need help with: [log in to see the link]