How to setup another account on same phone?

I instaled Qik on my Nokia E65 and it worked fine. Now I've replaced SIM card in the same telephone with new number and try to sign up for a new account.

First I've deleted Qik aplication from my phone, next I've try to sign up via your page with new number. Your service send me SMS with link to app which I've downloaded and install it, than as your message says"After it's finished installing, launch Qik and register with the code 'xxxxx'."

Now the problem: When I start aplication it doesnt ask me about this code, it is automaticliy connected. First I tought that with old username/number but then I test it and it isn't old one.

Please help me get out of this!