7 Bucks A Pop review for ShipRobot ‑ Shipping Labels

Based on the great reviews from 2 years ago, it seems like they've given up on this app. Zero customer service at this point. Called on the phone (straight to voicemail, no callback after leaving message) and sent them two emails, but received no response whatsoever. Very disappointing. Seems like the app could've worked for me, but it wouldn't let me print USPS labels and I wanted to know how to fix the issue.