WordPress Expert Needed: Restore wpDataTables Functionality on My Website

Job Overview I am looking for an experienced WordPress developer to help resolve a plugin error on my website. I have a WordPress site heavily reliant on the wpDataTables plugin. Due to a plugin version conflict (a Premium installation was inadvertently downgraded to the free Lite version), my tables are currently broken and displaying an error message: "Error. You are trying to load a table of an unknown type. Probably you did not activate the addon which is required to use this table type." (see attached screenshot) I hold a valid Lifetime Premium subscription for the plugin, so the goal is to safely reinstall the Premium version and restore full functionality. My #1 Priority: Data Integrity I have spent months building the data inside these tables. I am not a developer and am concerned about losing this data during the upgrade process. I am looking for someone who follows a "safety-first" protocol and will not rush into the repair without verification. Scope of Work Backup: Before touching any files or plugins, you must perform a full site and database backup. I need confirmation that this backup is successful and accessible before any further steps are taken. Plugin Reinstallation: Follow the official plugin manufacturer's guidelines to remove the Lite version and reinstall the Premium version. Verification: Once the Premium version is active, test the site to confirm that all tables are loading correctly and that no data has been lost. Requirements Strong experience with WordPress plugin management and database troubleshooting. Prior experience with wpDataTables is a plus, but not strictly required if you are a skilled WordPress developer who can follow official plugin documentation precisely. Must be able to communicate clearly and explain the steps you are taking to ensure safety. Application Instructions Please include the following in your proposal: A brief summary of your experience with WordPress plugin troubleshooting. Are you familiar with the WordPress plugin "wpDataTables"? What steps would you take to ensure a complete backup before modifying the plugin? Have you ever encountered this specific "unknown table type" error before? (This is not a deal-breaker, but it helps me understand your baseline knowledge.) I am looking to get this resolved quickly but safely. Please let me know your availability to start this week.