issues after installing quickbooks on a new PC

I had a PC failure and had to install QuickBooks 2014 on a new PC. I did that but now I am seeing a number of issues. 

I realize that this is an old version but it ain't broke so I am not too keen on spend money particularly given the fact that I am in the process of wrapping up the company.  Interestingly, the QB2014 has been running on the now defunct PC for years (both running Windows 10 22H2) and I have never seen any of these issues.

Every time I launch QuickBooks I get a message asking me to register. When I click on register now button, a blank screen entitled "Intuit Accounts - Sign In" opens and that's it - just a blank screen.

I suspect that the registration issue might be related to another problem I am having which is that I keep getting the following message:

"For Security, Intuit does not support this browser or browser version"  The message goes on to say that I should download and install a supported browser - trouble is that I have two on the list (Edge & Chrome) already installed. When I try to close this browser warning page I keep getting script errors.

In addition, I am having issues updating QuickBooks.  Updates to Essentials, Maintenance releases and Critical fixes work fine but I am getting a 15225 error for the New Features and Pro updates.

I realize that this is an old, undoubtedly "unsupported" version of QuickBooks but my accountant tells me that have lots of clients using vintage versions of Quick Books and I have gotten hits in google as recent as a few months ago regarding vintage versions of QuickBooks so I am hopeful that someone in the community has some insight.

Mike