Where is restore purchase option?!!! – Radio Javan Review

The app is clean and smooth. Selection of musics are great. However, I am one of early supporters of the app and paid for it to have no ad. Now, you removed restore purchase option and force me to subscribe!! I understand software developer needs to make money but in similar circumstances on other apps they honor lifetime subscription to their primary users who paid. Tried to contact before submitting the review but there is no way to do so.
Review by Amir-m on Radio Javan.