Glad you got sorted 🙂
If it's any consolation I get my wife to take her jaguar to have her xe adblue topped up, as jags are known for adblue system issues. This has saved us twice when the system has gone faulty and they've had to drain the tank, reset the sensor and top it back up FOC twice.
My rationale is, if they do it then we can't be blamed for it being over filled or wrong adblue fluid added etc.