Cookies vs. Server progress settings

Hi! 

I'm running Ubooquity 3.0.1 & I used to be on an earlier version - which I broke somehow, I'm not exactly sure which but I would assume v2. It used to have an option to either store book progress in cookies, or the server itself. Any chance that setting might make a comeback in a later iteration of v3? I share my library with my family & this setting was helpful. 

Thanks!