Syncing SaiSuke2 with other iphones

[Mary abbate]

I just installed SaiSuke2. I want to share my calendar with my family. The sync worked fine for a couple of days. Now I can’t see anything they add to my calendar. I followed all the info provided by Saisuke to sync these phones, but nothing is working. All phones are logged into my Google account so I don’t understand why this won’t work. In a previous inquiry on this website, it was stated to “toggle” calendar in iCloud, there is no way for me to do this, I have an iphone6s. Can someone send me “exact” detailed instructions on how to sync these phones to my calendar? Thanks