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Apple approved an emailing app’s update after rejecting it last week.

Angela Lang/CNET

Apple approved an update for subscription-based emailing app Hey over the weekend, after rejecting one last week, developer Basecamp said on Monday. It came as Apple prepared for its Worldwide Developer Conference event on Monday. 

Hey’s developers tweeted that updates had been rejected multiple times, as noted by TechCrunch, apparently because it wasn’t offering an in-app purchase for the full $99-a-year service. The app lacks functionality when downloaded — you have to visit the company’s website to sign up.

It also followed Europe’s Competition Commission opening dual investigations into Apple Pay and the App Store.

Apple didn’t immediately respond to a request for comment.

This story will be updated shortly.