not working when using many sources an roles

Hello I was struggling to create some redirects, supose the following redirects work
> role1 from home to home1
> role2 from home to home2
> role1 from intro to intro1

when i try to add another redirect
> role2 from intro to intro2

I get an error message saying Sources and roles combinations must be unique

I managed to edit the plugin inside redirect-user-save.php and noticed that this could be fixed by moving lines 47-53 into previous foreach, and also line 36

Thanks a lot for the plugin its really helpful!