Auto Calibration probing failed - Delta Flsun Kossel

Hey guys!
I recently got an FLSun kossel delta.
It was a bit neglected, so I lube it down as well as upgraded to Marlin 2.1. I never dealt with Deltas before, only i3 and CoreXYs so I am still learning.
Please assist me.

I am trying auto calibration. It probes, however at some point it doesn't want to continue further. It stops to do it itself but if I hit the probe it registers and continues.

The board is: MKS gen L 1.0 with a4988x5

Video Link

The Marlin config is the default Delta FLSun Kossel template in Marlins config templates.
I will paste them here as well:

Default Configs (link)

TL: DR
The printer halts and never succeeds to calibrate by using the probe.
What am I missing..?

Line 965 in your config.h

You need a pull up for a probe usually.

It is inverted a few lines later, for logic. (Zero = triggered, positive pulled up voltage = not triggered). That may or may not be correct.

Edited 1 time(s). Last edit at 07/29/2022 09:17AM by DragonFire.

I have the same printer, with the stock probe a.k.a. the nozzle triggering an endstop switch when pushed.

The video link you posted seems to be dead, but I have had something similar happen to me before.
Ensure the probe (nozzle) endstop switch is actually clicking (opening/closing). I had to try it a few times to get it properly tensioned so that it would reliably open when it contacts the bed and to close again after lifting the head.