Used to work, now both paid and unpaid versions crash – Magic Cleaner & Smart Cleanup Review

This app used to work very well for me, so much so that I purchased the paid version right away after only one use of the unpaid version. Now, neither version works. It crashes within seconds of opening. The crashing started 2 months ago. I've uninstalled and reinstalled the apps multiple times, the crashing continues. The most frustrating part is that there's no way to contact the developer. I've tweeted to the developer's handle, no response. This is immensely frustrating especially since I paid for this product and others from the developer.
Review by ediesque on Magic Cleaner & Smart Cleanup.