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The times that I have requested an Ollo CLI through their site, they tell me that they review accounts regularly for possible credit line increases - and that if I am given one, I will see it on my statement. They have never given me an increase, even though my credit score is 100 points higher than when I got the card. I haven't answered your question, but I just wanted to pass it along that their request for CLI seemingly doesn't work like with others.
Just looked at the website...when I hit the CLI button it has the message about them reviewing the account periodically...I don't think there's a way to manually request a CLI. I don't use the account anyway, they burned me with crediting my payments SLOWLY and dinged me fora late fee, so it's permanently retired from use.