Hi, just purchased Infuse Pro lifetime for $99. Very exciting because I have family members that really need it, though I do not. I spent an hour trying to share the purchase with my family, uninstalling, reinstalling, trying to restore purchase, etc. No luck. Requested refund. Please alert me as soon as family sharing of in-app pro purchases functions. We need it desperately.
It functions now. 
Thank you. I had already worked through that with a lot of frustration. I realize now I did not understand or heed the italic sentence, “(Note: Both the account sharing the purchase and the account using the purchase need to activate Purchase Sharing)”. I have since figured it out and hitting “Restore” does indeed take care of it with that change. Enabling purchase sharing for both sides is not intuitive and incomplete directions add to the frustration. I’d like to help others avoid the frustration.
Please consider not italicizing that sentence because italics make words less conspicuous. You need the opposite here. Also, I would embrace the fact that, thanks to Apple, purchase sharing must be enabled on both sides even though it makes no sense that would be necessary. Please consider adding in bold, underline something like the following:
“The in-app purchase will not display as a subscription in Family Sharing, but may still be made available within the Family Sharing group by enabling purchase sharing.” Any other Family Sharing group member who wishes to use the purchase must also enable purchase sharing, even though they will not make the purchase or share it with others. Tapping the “Restore” button and entering the AppleID password once or twice will enable the purchase on any other group members’ devices.