Minecraft Marketplace won't let me update RealismCraft to 1.4

Soo... Basically 3 months ago (I think, like, I can't remember) I bought Realism Craft for 10 euros and last week the Spark team released the new update... but just when I wanted to update it Minecraf Marketplace just won't let me do it and now I'm stuck to the downloading screen for like 15 minutes... Please do something, I spent 10 euros for this!!