Not syncing

I have been looking to contact somebody at the company because I need help to sync my notes with my iPhone 6. I just paid for premium thinking the app would work better, but it doesnt. I cannot find a contact phone number or email. My "online" notes on gnotes are not the most up to date with the notes I have in my phone. Please help

DDiguglielmo about GNotes By Appest, v1.7.0