Unfortunately there is a current issue with macOS Sierra, we have a workaround here:
Sorry for the inconvenience, we are working on a more permanent fix.
We now have a beta version which should work properly on macOS Sierra:
This should work in Safari and Chrome. Let us know if there is still any trouble.
My problem is also that jaksta wont record anymore with macOS Sierra. When jaksta is turned on, than I can not starte internet sites
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