Hello.
Thank you for your interest in our products.
Starting with the version 4.5.0, we changed the method of synchronizing with Apple Calendar. In other words, for new installers of our app only, we have changed the sync method from the method that syncs via the calendar app inside the mobile phone (shown as iOS calendar), to the method that connects directly to Apple’s server and syncs with it (shown as iCloud calendar).
This is to fundamentally resolve complaints from some users who mistakenly believe that events in the Apple calendar are occasionally lost depending on the cell phone settings, and to synchronize faster and more reliably.
If you are not a new installer but an existing user who wants to update the app, we will keep the sync method via the calendar app inside the mobile phone to avoid confusion.
However, if you want to reinstall the app, change your device, or want to sync reliably in a multi-device environment, please make the settings show iOS in the side menu as follows.
Please contact us if you have any difficulties with the process. We’ll help you with settings.
Contact : support@timeblocks.com