Hi guys! did you manage to resolve the parking issue? I have the same problem.
How can I check if I'm using extDB and if it's working?
In RPT file it will write extDB3 loaded like in picture here

Parking, Vehicle Storage and Bases
Plus in @extDB3 folder in "logs" folder there is this if success

Parking, Vehicle Storage and Bases
if wrong

Parking, Vehicle Storage and Bases
First problems what i had was right login/password to SQL server + closed ports correct them all and it will work (extdb3-conf.ini file )