Make sure when you are completing the offer to wait for eaech page to load completely, also make sure you disable ADBLOCK or any extension that blocks cookies.
The Email Submit offers are free of charge and only requests from you accurate information and that's all, sometimes it takes several pages to fill up but it still takes a max 1 minute to complete.
PIN Submit offers are easy as well to complete but it will charge your phone, these offers tend to complete with 95% success rate, we recommend you to complete these ones. It also takes 20 seconds to complete.
In this case try another one to complete and wait some time for the checker to confirm you. if it is still loading then try another web browser and restard modem.