Affiliate manager help

I got this email after I made $300 in a couple of days with a cpa offer:

My name is ---. I am you account manager at ---- ---- Affiliate Network. I had a couple of questions for you. I wanted to know if this was your only site. I see that you are also running google add, but did not see our ads up on your page. How are you driving traffic to the site? Also if you would like some suggestions, I would be glad to help you out in any way I can.

I replied:
Hi xxx
Pleased to meet you, to answer your questions. This is my only site, it is a work in progress, as far as the traffic, I ran a short geo targeted adwords campaign as a test. If there is a problem let me know now. And I would very much appreciate any tips or suggestions you have, as I am very new to any kind of affiliate marketing. You can contact me during the day at, email xxxxxxl or on my cell xxxxxxx when I can get a signal. Yahoo Im is xxxxxx.

Everything was good till today 2 weeks laterand I get this,

Hey xxxxxx,

What do you mean by a geo targeted adword campaign. I do not see the offer up on your site. The conversion rate is 25% on that offer which is pretty high. If you could clarify this I would appreciate it.

Thanks

xxxx

I replied:
I ran an adwords campaign in google, not nationwide but just in a certain region. I redirected through my website to the offer. The offer shows to be expired so I haven't tried to do anything more with it. I've been too busy to do anything lately.

Thanks
xxxxxx

Is this something I should start worrying about? Are they gearing up to withhold my money?

I don't know but posting that email in public probably won't help your case. I suggest you try to edit some details and change the wording on the email you received and sent.

What affiliate program is this

It was an education cpa offer

I did change it a little, and I don't see a edit post function anywhere.