Hi! Again, you're very close. @Akhtar.shahbaz idea is right on. Here are some suggestions.
Configure your calendar (the "include" section) to look like the below image - no checkmarks. You don't need Half years. Also, with your custom view, you should only have forecast months. Use your Boolean filter from your SYS00 Module (Forecast Period?)
To synchronize you will see that option in the "context" section in your screenshot. Click on that tab and make sure they're turned on. Your board should look like the image below, or be kind of close to this.