HAPAcLite webfig menu issues

I noticed just today, that when I accessed the router via webfig, I can login ok but LHS menu items appear locked as is Quickset and Terminal tabs- very puzzling!
When I expand the System menu as an example, none of the subfolders respond. The webpage opens with “Interface” button depressed, but Wireless and Bridge buttons also appear locked. Anyone have any ideas. Tried rebooting, factory reset and restore to original IP backup file, but no luck. I’m viewing the page with Safari on a MAC running latest update of Catalina 10.15.6

When I accessed router in Windows Winbox, to get back into to do a factory reset router, thinking router OS was corrupted, I was allowed to access the menu items as usual. It was when I went back over to OSX that the system appeared to lock up. Possibly some obscure MAC setting in the latest update is causing this… anyone else had this issue?

Thinking I should change the password, I couldnt even achieve that…

HELP

I’ve determined that this problem emanates from the latest Safari on MAC, not sure why! Android phone gives normal access as does Chrome on MAC. Will post further info as I get to it. Any input welcome…