I turned on notifications for gift ready and ships ready. I cannot find the option to disable them now. How can I do that?
On Android 7.0 Nougat, you can just pull down the top menu where notifications show up and then find a SkyForce notification in the list and press and hold it for about 2 seconds until it opens a new window showing the notification settings only for SkyForce. Then just uncheck the "Allow Notifications" option and you shouldn't get anymore of them.
Assuming you are using iOS, just go into the Settings App, go to Notifications and find Sky Force Reloaded in the list. From there you can disable the notifications. Presumably something similar on Android.