The small tweak is that when accessing the /access-portal as a guest user if you try to click on the "Options" button it's completely disabled, it does nothing. Instead of blocking/disabling the button I think it would be more appropriate to launch the login modal.
By the way, a while ago it was suggested in V17 to create a public repo for the Support extension to track issues, maybe it's also a good idea for the current and future Blomstra premium extensions, of course it depends if it suits your way of work.