You should be able to just hit the drop-down arrow and select a refresh rate (1/5/10/30 minutes). I don't believe there are any options within the program to disable this.
If the menu option is not working, try the same in a different browser.
Yes that works, however after a few auto refreshes later the default disabled becomes the refresh rate. I have tried other browsers and I get the same experience. So what I hear you saying is that there is no way to change the default setting to 5 mins is not able to be programmed or changed.
My experience is different; I have mine set to 5 minutes and it persists across multiple browsers (normal and Incognito) and multiple login sessions. I've never seen it revert to disabled.
We're on 12.5.1, so not completely current. Possibly a bug? Might be worth a support call, as I'm not sure what might be the cause. Sorry, not much help I'm afraid.
