PRO version doesn’t become available after $6.99 charged – CorrectMe English Grammar help Review

I found this app very useful and decided to buy pro version with in-app purchase. It doesn’t allow me to input more than 500 after $6.99 was charged to my apple account. I clicked feedback button to ask questions. It errors requiring email setting, however, there’s nowhere to setup email. I’m writing this review hoping that Mate Kovacs provide any assistance or Apple pays me back $6.99.
Review by shigex7 on CorrectMe English Grammar help.