Purchase of MN4 not working through App Store

I own MN 3 app for iPad, purchased from the App Store. I downloaded MN 4 app for iPad from the App Store, and tried to purchase through its Pricing link an update to MN 4 as an MN 3 owner, to qualify for the special price being offered to existing users. However nothing happens: I get a message that MN 4 is confirming I do own MN 3 and MN 3 automatically loads, but that’s it. MN 3 just sits there open, with nothing else happening and no purchase info coming up. How can I purchase MN 4 app through the App Store if the “Pricing link within the MN 4 app is not working?

Hello

The recent update to MarginNote3 has resolved the aforementioned issues.

Kind Regards,

Support Team