When will an Organisation's Administrator/Account Owner get notified about the Advanced features trial?

When will an Organisation's Administrator/Account Owner get notified about the Advanced features trial?

An Organisation’s Administrator is sent the following messages:
  1. The trial period of the Advanced and Premium features has started
  2. The trial period of the Advanced and Premium features will end in XX days: (10, 5, 1 days)
  3. The trial period of the Advanced and Premium features has ended
An Organisation’s Account Owner is sent the following messages:
  1. The trial period of the Advanced and Premium features has started
  2. The trial period of the Advanced and Premium features will end in XX days: (10, 5, 1 days)
  3. The trial period of the Advanced and Premium features has ended
  4. Your subscription plan has been upgraded