I am a user who subscribed to the Goodnotes Essential plan a few days ago. I was looking into why my Goodnotes library won't sync between Windows and iOS, and I found the following text:

'If you purchased this plan before September 23, 2025, you are eligible for Goodnotes Cloud. If you purchased this plan after September 23, 2025, you will need to upgrade to the Goodnotes Pro plan to use Goodnotes Cloud.'

When will cross-platform sync be supported for the Essential plan? I subscribed to this plan because the pricing clearly indicated that the Essential plan also supports cross-platform sync, so I am confused that the sync is not working.