I don't like credit one bank. I've had them for almost a year always PIF and they only gave me one automatic CLI for 150. When I requested one they said that I hadn't been with them for a year. I am canceling them in August. They report to all CRA. My husband is AU and it reports for him as well. They only allow one AU I wanted to add my sister to bump up her score but they said no. I paid 75 AF. The credit score on their site took 3 months to post. I never got a message about a fee.
@Vegas4Play wrote:No avoid fees on the card if you need it for utilization, call on month 11 to close it and they will give you an offer to waive the monthly fee on it for 6 months keep telling them no no no and they will give it to you for 12 months no fees...don't take the pay for limit increase, just wait and be patient and they will offer you 250.00 increase for free.
Also keep in mind there card starts to charge intrest on the purchase date..... there is no grace period, I found it better to push payments to them from my bank instead of logging in and paying it and having it pulled from my bank. They only allow you to make so many payments per month, when you login and pull payments.
Or you could just not use it.
That is great advice! Thank you so much. 
OP, the sooner you are comfortable getting rid of them, the better, imho.
Honestly, I would just cancel Credit One and not even bother with them. The card is only a month or two older than any other card you have. I doubt it will affect you that much, if at all. That company is worthless. I applied for their card as my first card and when i received the card I called to cancel and close the account even before activating the card. It has never reported as I never used it.
From experience it does report as others have said but it sounds like that CS agent was trying to get you to buy that extra credit report thing they have I think with EX or TU...boloney on their parts from even lying to you to that degree OP. You do get the free score it's a FAKO aka I think that one is the Vantage 3.0 (some lenders may still use but not many I know) the score is like 200 points different than my real Fico now. Defintely as others said if you're rebuilding let it serve it's purpose and cancel before the AF applies and they will try to get you to stay with APR reductions, account credits and waiving the monthly fee (AF will charge monthly broken down after the first year)
Best wishes either way you go, but now you know the score they do give isn't a Fico and it doesn't cost