The add-on "provider for Google Calender" coming from your site, is not verified and won't install. What can I do?
I want to synchronize my LG-android-telephone (with Google calender) with my Thunderbird calender. I've found "provider for Google calender" on the Mozilla-sites, but Thunderbird warns me it cannot install an unverified Add-on....
Gekozen oplossing
That looks like you're installing into Firefox.
Download the xpi file then install it into Thunderbird. Or drag the link for the xpi file onto Thunderbird's Add-ons page.
https://support.mozilla.org/en-US/kb/installing-addon-thunderbird
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Gekozen oplossing
That looks like you're installing into Firefox.
Download the xpi file then install it into Thunderbird. Or drag the link for the xpi file onto Thunderbird's Add-ons page.
https://support.mozilla.org/en-US/kb/installing-addon-thunderbird