Hi Nikola,

Thank you for your timely reply.

Please can you clarify the exact expected behaviour of "Auto reservation"?
When an anonymous user selects a timeslot does EA automatically block the timeslot locally and on GCal for a period of 5 minutes until the booking is made. If no booking is made EA unblocks the timeslot on EA/GCal. Is that correct?

Here are the steps taken. Auto reservation still seems problematic:

I logged into WP-Admin-->Easy Appointments-->General-->Ticked Auto reservation
I cleared the cache in Chrome
Click on padlock --> Site Settings --> Clear Data (I also tried Chrome TRS Hamburger --> Settings --> Privacy and security --> Clear browsing data)
I closed the browser.

I am using a Cloudflared Tunnel for my WP instance running in my home:
https://cloudflare.com/ --> Login --> Click on Domain --> Purge cache --> Purge everything (wait 10 mins? for purge to propagate)

Browse to https://self-host.xyz/?page_id=7 (Appointment booking page)
There is a spinning wheel of death over the calendar so I cannot do anything.
I logged into WP-Admin-->Easy Appointments-->General-->Unticked Auto reservation-->Save-->Tick Auto reservation-->Save
https://self-host.xyz/?page_id=7
I am able to select a timeslot but not fill in my details.
I also noticed that the "Block Before" = 5 was not respected because I could select the first slot after my last appointment (synced from GCal - non EA).

Conclusion:
From the browser where I am logged in I can select the timeslot but not fill in any details.
From a browser where I am not logged. Not OK (Spinning wheel of death)
I am unable to use the "Auto reservation" functionality.