Question re Save.ca

I recently requested few coupons via save.ca after hours of technical issues. I then found out about another coupon & requested it. There was a message that was generated to the like "some of your coupons have been removed as enough time hasn't elapsed." I'm new to this and wasn't even aware of timeframe between requests.Now I don't know what coupons will be mailed. Does anyone know what the waiting period is? Is this an issue on other similar sites? Has anybody ever experienced this?Thanks in advance for your assistance ,