I may have the same issue. I installed it using the zip file. It shows as "enabled". But selecting it does not get me anywhere. Is the repo not compatible with Kodi 15 yet? I am on Kodi 15 Alpha 2 on RPi2.
Server: Asus Sabertooth Z77 | Intel Core i5 3.4 GHz | 16 GB DDR3 | 128 GB SSD, 82 TB (9 x 6 TB, 7 x 4 TB)
HTPC 1: Raspberry Pi 2 | HTPC 2: Raspberry Pi 2 | HTPC 3: Raspberry Pi