I have this problem as well - but I'm a 3rd party trying to connect to a customer's network. I have to go through them to get support and there are time zone issues that make progress a little slow. They are trying to make progress and the last feedback I had from the customer was that support would like me to set up a virtual machine running Mojave to test with. I tried using Apple's own instructions but when I tried to create a bootable installer on a USB drive the gatekeeper app told me that the Mojave installer was from an unknown developer and I could not get past that. I've fed this back and asked if we can continue to test using Big Sur - which is now at version 11.2 Not exactly progress - but it's being worked on. Dave
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