Unfortunately, it's not coming back - they shut down the service.

We've found some piecemeal things between now and then but they're all very "This is a service that works in [insert single country here] for [phone payments/card payments/pick up value cards in the store]" and that means that we have to dedicate engineering time into supporting that one little option. Sadly we haven't found one yet that is as encompassing as PBC was :/

Steam and LoL are much, much larger than Subeta, and can afford to have staff handle tickets and problems from all of those systems :)