How to enter authentication for a private RSS feed on Kasts v25.12.2?

How to enter authentication for a private RSS feed on Kasts ?
I just installed Kasts app on fedora kde laptop, but there is no way to enter usename and password for the private potcast.. is it lacking in the feature or just i don’t know how it is done ?
I tried to append username and password onto the address, but it is not working.

I hope someone can help.

This is not yet supported.

ic. ok then.

just want to know
Will this feature be added into the list of to be implemented ?
Thanks