Paymill Transaction Failure (code 50000) starting with 10.04.2018

Question

Has anyone else had issues with Paymill transactions recently failing with code 50000 (starting with 10.04.2018) and have a fix for this?

---

The context, after several calls with their support team:

• They changed the banking provider they collaborate with and had some data migration issues which aren't solved to this day.

• Our particular issue is that our clients' existing payment methods aren't working. They were probably not ported to their new banking system.

• The only --let's say-- solution we've found is to kindly ask our clients to re-register their credit cards.

• I hoping we're not a single, isolated unlucky case so maybe someone else can share their experience on this.