Google Calendar limitations with Safari browser.

Connecting Google Calendar to My Work works out of the box in all browsers supported by Atlassian except Safari, which has some limitations.

In the versions 11 and 12 of Safari, Apple introduced a system called "Intelligent tracking prevention", that prevents third parties from tracking the user via cookies, commonly called cross-site tracking. This implementation prevents legitimate use-cases such as when Safari users want to allow Tempo to access their Google calendars. In these versions, it's therefore currently not possible  to do so without changing the security settings of the browser.

To use Google Calendar integration with Safari you need to turn off "Website tracking / Prevent cross-site tracking" in Safari's privacy preferences to circumvent this restriction.  Note that changing these settings might have negative security implications unrelated to Tempo.