I was asked to log in on my Mac. Log in screen kept coming back

I still have four more months to go on my annual VPN (stand-alone) subscription, but I'm pretty much DONE with my struggle with the application. Over the past several weeks, the Norton VPN application for the Mac has been a disaster!

I've been a user since 2016, with the application installed on two Mac computers, two iPhones and a Dell PC. Never had a problem with it until several weeks ago when, suddenly, I was asked out of the blue to log-in again on my two Mac computers. Tried to do so, and the log-in screen kept coming back, unfilled, on a kind of continuous loop. Just could not log-in on the computers. The two iPhones and the PC had no problems, and the VPN is still working on both. Tried uninstalling and then re-installing the program on the two Mac computers about eight times with no resolution. Spent countless hours trying to reach a human being by phone to get some help. On finally reaching someone, I was told that "we're having some problems with Macs right now, but try again in 24-48 hours." Tried again, and again, and again, and ....... , but to no avail. Tried another several times to reach a human tech supporter at Norton, but just gave up after hours waiting for someone to answer the support line.

Suddenly, early last week, I was surprised to find that I could log-in to the VPN on both Mac computers. It lasted less than a full day. Later that same day, it not only did not work, but now the problem was different and more maddening. On both computers, the log-in screen appeared after boot-up, but the log-in screen was a blank white with no lines for username/password information -- totally blank. As though that were not bad enough, the VPN application stalled and was non-responsive and would not allow me to quit. After screwing around for the past week, I finally uninstalled and removed all traces of this haunted mess from both Mac computers today. I still have it on my iPhones, and it seems fine.

The only consolation now is that I finally remembered to check this user forum today and discovered that I'm not alone in this frustrating disaster. I can see now that I've got lots of company, but I'm going to desert them (sorry!), because I need to get on with life and get back to my work/business.

So, as of today, I'm looking for another VPN product; if anybody has some suggestions, please post here. By the way, the Express VPN product has a lot of bad rep out there, so we need to be careful. Anybody tried the PIA VPN yet? Any advice?

Thanks, folks!

[Edit: Calrified the subject]