Flash player out of date?
I have the latest flash player for windows installed, not sure if Vivaldi uses its own built in flash player like Chrome browser.. I only have this issue with Vivaldi where sites that use flash tell me its out of date.. Cant use internet speed test websites because of this. Every update I hope its fixed and today "01-05-17" was another update and still a non working flash player in Vivaldi.
@ezmoney1098 - Flash (PPAPI 126.96.36.199) works perfectly fine here. Is yours enabled in tools/plugins?
It's easy to accidentally grab the wrong one of the several posted. Maybe that's why?