I tried to look it up but could not find it… this is something similar but not the exact one:
I think one of the users made a simple to look at site with all the available parts / prices and where to get them… too bad it is lost somewhere in the forum.
EDIT: Anyways, here is perhaps a shop you did not know about yet… im not sure how great part availability it has for EU, be has was also the one who made a groupbuy/s for some of the motors.
EU site (sort of): https://eu.electric-skateboard.market/product/2-4ghz-mini-remote-receiver/
Too bad mini remote is out of stock from them (I’ve got one myself) but perhaps you would also choose it, it is quite reliable.