I went through those step and selected yes for 1b and no for 3a. It gave same exact error. I removed and added the wfa host with the IP address and it did the same error but this time showing the IP address instead of the hostname as being mismatch.
I thought it would work too but it didn't. Any more suggestions? I'm willing to start over at this point but would need to do something different if I do.
InternalError: Cannot execute request: ; hostname in certificate didn't match: <x.x.x.x> != <wfa 2.1> (Dynamic Script Module name : executeWfaRestOperation#11) (Dynamic Script Module name : executeWfaRestOperation#17)