WISE-1570: Firmware unable to reset/halt the target MCU

I started working with the WISE-1570 MCU and have already succesfully programmed it several times. For drag'n'drop programming I am using the latest DAPLink version (v0253, I also tried v0245) and the WISE-ED22 board for USB connection.
Two days ago the device stopped being programmable. Everytime I drag'n'drop compiled files to the MCU, it fails and shows `FAIL.txt`.
```
The interface firmware FAILED to reset/halt the target MCU
```
I know for sure that the compiled files are correct since I have already successfully programmed them to the MCU!
At first glance, this sounds like a hardware issue since it stopped functioning normally out of nowhere. Nevertheless I hope someone might come up with a solution.

Thanks in advance.
Florian