Sorry, the username "%s" is invalid because it contains the character "%s". Please choose a username using only the following characters: a-z 0-9 - _

Samahani, jina la mtumiaji "%s" haliruhusiwi kwa sababu lina tarakimu "%s". Tafadhali uchague jina la mtumiaji litumialo tarakimu zifuatazo tu: a-z 0-9 - _