Set calendars from 'off' to 'on'

[cisglee]

Installed O365 yesterday using the 'alt auth flow.' Everything worked well for a day, but as of this morning, all my calendars are 'off' and I haven't found a way to switch them back 'on'.

The get requests seem to work - 'Received response (200)' - and there are no errors related to o365 in the logs. The sleep time between the requests is relatively long and this seemingly extends my startup time considerably, but I assume that this is to ascertain that the number of server requests is not too high.

Otherwise, the only somewhat noteworthy line in the log that I can find is the following:

2021-04-07 12:47:47 WARNING (MainThread) [homeassistant.loader] No 'version' key in the manifest file for custom integration 'o365'. This will not be allowed in a future version of Home Assistant. Please report this to the maintainer of 'o365'

Any help would be greatly appreciated.