Hi @emefff. I would recommend trying the alternative boards platform that was recommended by @al1fch at the end of the forum topic @Dave_Lowther shared?:
Unfortunately I don't think anyone has set things up to allow that platform to be installed via the Arduino IDE Boards Manager, so you would need to install it manually.
It might be easiest to do that by first installing the "Adafruit nRF52" boards platform by following the instructions here:
then applying the changes made in the fork that add a "nice!nano v2" board definition to the "Adafruit nRF52" boards platform:
then finally selecting Tools > Board > Adafruit nRF52 > nice!nano v2 from the Arduino IDE menus to configure Arduino IDE to use that new board definition.