PI Adapters - XI Adapter Missing - Dual Stack Installation

Hi there experts.

I am having some trouble trying to configure a XI Receiver CChannel. When I try to select the XI Adapter from the Adapter's List, it just doesn't show.

Actually, there are other adapters missing, like WS adapter.

Here is my Adapter Metadata screen. It has a criteria "Adapter Runtime Type - Java Runtime". I can't remember any situation where I had this criteria, but it is there now and I can't remove it.

The SAP Basis package is imported and I can see the XI Adapter Metadata there.

I asked Basis for help but they didn't find anything why the XI Adapter isn't there.

Could you please help me?

Thanks and regards.

Flavio