Fenix 6 Pro Solar Watchfaces goes back to factory setting without phone connection after sometime


I recently installed one of the watch faces from connect IQ on my Fenix 6 Pro Solar which displays many custom fields. However if my watch is not connected to the phone for sometime. it will default to the standard factory setting watch face. 

When I try try to change it (Without being connected to the phone) via holding now the menu button and navigating to watch faces, it just shoes me a ConnecIQ symbol with a question mark.

I am unable to even view the watch face inside the watchface menu selection page. 

Could this be due to me installing the watchface wrongly?

Hope anyone could help.