Sorry Nikola, you've lost a customer here.  While the plugin worked well when it was working, I dreaded every update and would leave it a while before updating.  The last update caused the entire system to stop working correctly and I only had 1 comment from you in 2 weeks.  I also discovered a conflict with woo commerce checkout which would clear when the connect app was disabled.  All in all the plugin has great potential, but nowhere near ready for commercial release to be trusted.  My website is my business online service, I need to ensure reliability and consistency with every update and reassurance that it's been thoroughly checked before release.  There also needs to be support to back up the new releases.  Thank you for the 2 or so years I stood by this plugin for development but I can no longer trust that an appointment being made will be correctly checked and routed to where it needs to go.