Apple will be performing scheduled maintenance on its iTunes Connect developer portal that may leave some users unable to make purchases from the App Store. Citing an email to developers, Mac Rumors reports that the work on iTunes Connect, the developer service used to submit applications to the App Store, is scheduled for today at 9 a.m. to 4 p.m. Pacific Time. During this time, according to the email, any pricing changes made on the service will cause the app or apps to become unavailable for the remaining duration of the maintenance, after which it will reappear on the App Store at the new price. Notably, the email also states that customers in Mexico, the U.K., Australia, Switzerland, Japan, and Norway may not be able to purchase apps during the maintenance period. As noted in the report, a number of users reported connection issues with the App Store server last evening; it’s unclear whether the issues were related to the maintenance.