Mine was suspended today as well, I entered one survey and it said I was not qualified, so I clicked the frown icon and check marked "survey ended too early" or something like that.
Been watching videos daily for awhile now, but noticed recently that when clicking "accept" green button, I'll get the dialog that says "No more videos available at this time".
I then close the app and clear my memory on my phone, then restarting WGT gets me back to watching videos again. But I have noticed this has been happening more often recently.
One other condition also occurs. I cannot get back to watching videos, ie, I get dialog mentioned above constantly.
To remedy this, (this tip is elsewhere on this forum).
Goto settings, click "Google", once open, click "Ads", then click the dialog that says "Reset Advertising ID".