Only password (router login): Choose own credential fields problem

[FranzFelberer]

I am using

• KeePassHttp-Connector Version: 1.0.11, KeePassHttp Version: KeePassHTTPKit
• Chrome(Version 67.0.3396.99 (Offizieller Build) (64-Bit)) on MacOS (10.13.6 (17G65))

The problem: When I try to login to my router only a password is asked.

I cant get KeePassHttp-Connector to fill out the field, nor can I choose your own credential fields. It chooses automatically the one field as user name

Thanks for your help. I did a small search, but couldn't find anything related.