Glad to see that you have chosen openrepos.net for distributing

It is my fault, that there is no public publishers guide yet.

One thing on openrepos usage:

You have uploaded multiple packages to same application. All packages have different names.
This will confuse Warehouse application.
To make it work as expected you have to select one of the ways:
1) Create separate applications for each rpm package
2) While editing sailfishos package, move main 'jolla-anthy-jp' package to the top of the uploaded files list, so it will be the first one in attachment list.