So, when you said: "When I try and put Cape Primrose Streptocarpus Indi in the database," you meant "when I try to put Cape Primrose Streprocarpus Indi in my list." Okay. I see why you had the problem. I'm glad you waited for a while and were able to add it.
I deleted the "Polish" from Mira's name because it isn't really part of the cultivar name. You can add a comment to the entry to identify it as the Polish hybrid. If you ever decide to add the other Mira, send me a request by tree-mail. The system won't let you add a cultivar with a "duplicate" name.