Creating this to have a main reply answer since you can't mark sub-replies as answers. As viiTactiiCZz mentioned in their reply, there is, indeed, a confirmation dialog where you have to manually accept several notices before continuing when setting up Cross-Save. One of these notices is that Cross-Save cannot be disabled within 90 days of purchasing Silver on any of the platform accounts associated with the Cross-Save you're about to set up. This wait period is mandatory and will not be reduced or removed once it is applied. Unfortunately, you'll need to wait until the time has passed before you can disable Cross-Save. In addition, it should be noted that if you purchase Silver on any of the currently-linked platform IDs, the 90-day wait will refresh from that point, as the 90-day wait is from the most recent point Silver is purchased.