Unable to show my subscriptions

Although this app has been very useful in the past, Ive not been able to access my subscriptions for 2 weeks which makes it useless. As a customer Im happy to have paid this app but I dont understand why the developer is waiting so long to fix the issue. If YouTube changed its APIs we need an update ASAP and we cant be left in such a situation in which the developer simply waits for YouTube to fix things. This is not acceptable.

sebnoumea about ProTube for YouTube, v2.5.8