RecoverMyCart

All of a sudden app stopped sending customers emails. It’s been 5 days and no emails sent. I am waiting for a response from support to fix this issue.
UPDATE: Started working again after I uninstalled the app. Now several months later the same issue has happened again. However this time it's not working. I get charged every time I install the app so they are basically stealing money from me and I can't get ahold of anyone. Emails keeping bouncing.