I am also having this issue. Really frustrating! I am getting these errors which I think all relate to the same core problem. Hope this gets sorted soon!
2026-02-16T19:54:39+00:00 Debug
==== SumUp Version: 2.7.10 ====
Merchant ID:
=== Start Log ===
Error on get access token. Missing client_id
=== End Log ===
2026-02-16T19:54:39+00:00 Debug
==== SumUp Version: 2.7.10 ====
Merchant ID:
=== Start Log ===
Error on settings to create access token. Merchant Id:
=== End Log ===
2026-02-16T19:54:51+00:00 Debug
==== SumUp Version: 2.7.10 ====
Merchant ID:
=== Start Log ===
Error on get access token. Missing client_id
=== End Log ===
2026-02-16T19:54:51+00:00 Debug
==== SumUp Version: 2.7.10 ====
Merchant ID:
=== Start Log ===
Error on settings to create access token. Merchant Id:
=== End Log ===
