Not working

I have purchased this app as decoration but when I have purchased it, it has slowed my phone and I dont have many apps or photos, also when I try to send text it gets deleted automatically and there is nothing. I want to get a refund because why would I waste money on an app that doesnt work and that slows my phones be down, also with the money Im getting a refund i will by an app that is useful

Asdflkji about Nemos - Themed Bubble Image Designer for iMessages