For the first time ever on "Daily Surveys", I had problems yesterday (6-17-11) but I noticed when I returned to WGT my session was dead (for the 3rd time) and I had to login again, which cost me that 75 credits. If you were logged out of WTG that may have been your problem as well.
On the other hand, I don't recommend MyView Surveys as I have discovered they are committing fraud and after the 3rd time around I started taking screen shots of the last page of the actual survey stating that I had completed it before clicking the button to return to Trialpay or the survey site. I have sent the screen shots to TrialPay and WGT as proof of the scams Myview are committing. Also it is my understanding they are looking into the situation for possible removal from the list.
As with many other members here, I have not had any problems with Ampario, Samplicio.us. and with the exception of yesterday, Daily Surveys.
Now take notice: If you are going to do surveys or any of the other credit offers through TrailPay, make darn sure you have cookies enabled on your browser, including third party cookies or none of the processes will track at all.
If you are going to do surveys and want to ensure you get your credits, I suggest you screen shot the survey completion pages and save them for your records. If you fail to receive your credits for them, you will have proof to show when you contact TrialPay or WGTadmin with your complaint. This helps legitimize your claim when you have proof.
And before anyone gets the bright idea to use old screen shots to defraud WTG, keep in mind every time you save a file it date stamped with the creation date and time and when you make a change to the file it is stamped with the modified time. So don't try to use screen shot files that were not created at the time you claim to have done the surveys to get free credits you did not earn.