Thanks. The problem seems to be that Apache won’t start. Syntax error on line 244 of /etc/apache2/apache2.conf: Could not open configuration file /etc/apache2/mods-enabled/authz_default.load: No such file or directory.
The trouble with simply downloading a current image of max2play is that I have a lot of other stuff on this Pi that I would need to re-install manually. I am planning to get a new Pi4 once you are happy that max2play is stable on it. Then I may keep the old Pi for the other stuff.