Liftgate Softclose Actuator (SCA) Failure

[Kayufa]

Hi Guys, I am moving this to a new thread hoping for some insight into this issue. (It was originally posted under the "Ebay springs to raise hatch" thread, as I believe they are the cause to my issue).

Issue:
A few months after I installed the springs to open the hutch/ lift gate I started finding the lift gate open occasionally in the garage. Later I started hearing the actuator a few times going crazy back/forth when I opened the tailgate. After that the Softclose (grabbing/pulling the hutch in) has stopped working altogether. Last week the lift-gate opened twice while the car was running! I was stopped at a light and had to run out and close the hutch.
Another symptom is the exterior button (to open lift-gate) has stopped working pretty much all together. Happened right around same time I believe.

Diagnosis so far:
As per QSilver7 recommendation (thx, mate!) I checked fuses (OK) and pulled/ replaced the relay. Interesting thing - when I was at BMW yesterday, putting the new relay in - I shut the lid and the SCA actually worked! Once.
It pulled the door in only the first time I closed it after I plugged the relay in. Second time and on - no joy. The exterior button worked too! It actually worked a few times after the new relay was in, but this morning it is not responsive again.

For the record I also tried the method on dbx5's thread but turning the star screw did nothing for me.

TL;DR - The actuator for back hutch works with remote and in-dash button but not with exterior button. It does not pull the hutch in (SCA). Hutch opens at night when car is unlocked. Recently also when car is running.

Please advise, Thank you.