Repairing settlement crack in render

[padstar]

It has been a few weeks since i removed the props supporting the back of the house and the SE told me that any movement would be visible within 2 weeks. Only 1 crack seems to have appeared it drops from the corner of a window opening down to the steel below and is about 2mm thick. It is cracked all the way through the wall.

What is the best thing to do here? Is there some sort of resin that can be used to infill the crack before painting?

 

[23vc]

I’ve had some success by stuffing as much exterior flexible filler in as poss, cleaning off any excess and stippling it a bit with a brush/sponge to try and match the texture. Almost impossible to get it invisible tho.
Ps that’s for sand and cement render, silicone/mono type might be a bit more forgiving as it’s a rougher finish

 

[padstar]

Thanks. It's pebble dash so I think it won't show that badly