Cura 'pause at height' print won'te continue

[JamestKirkup 0]

Hi there,

 

I'm trying to print business cards with raised text in a different colour, I'm using the pause at height plugin for cura 4.4.0. It stops the print at the right height and moves the print head to one corner, the pause button on screen changes to a resume button, I load the other filament and press resume but nothing happnes, the printer stays hot with the fans on and it just sits there, any ideas here?

P.S. I am using an Ender 3 running the latest version of Marlin running on a MKS gen L with TFT screen.

 

Any help would be much appreciated