[keycloak-user] Adapter 1.3.1 on EAP 6.3.2

We have REST services on EAP 6.3.2 with adapter 1.3.1 and gateway server WF 8.2 with 1.3.1 server. This configuration doesn't work. Our test case works on WF 8.2 server with adapter 1.3.1. Does anybody has idea, why it shouldn't work also with EAP 6.3.2? Are there any incompatibilities? -- *Mitja*