Access databases are extremely reliable. We have clients that contact after 5 years of running their Access database with no needed intervention from us. But maybe they want to upgrade to the current version of Access (indeed maybe they NEED to upgrade because their new computers come with new operating systems that don't support previous version of Office). And maybe they currently use a depracated function of a previous of version of Access like the Calendar Control that so many Access databases used to use, but is now replaced with a date picker. We've recently found that browsing to files using code Microsoft provided to developers years ago is no longer working on current, Office 365 databases. We have new code to replace the old code. You probably want a professional Access developer to rewrite your code for you in thiis case. In 2019, Microsoft changed their Network Operating system that broke Access. I am not referring to the PC Operating system, but rather the Network Operating system. It took Microsoft at least a month to realize this issue and put out a temporary solution for developers to use and resolve database issues. This is another example of how you might need a professional Access developer to repair your Access Database.
Here are some clients we have helped: