BBLog will lost the settings if you delete some browser-cache data. You must make sure that no automatic garbage truncate, private mode, auto cleanup is enabled in chrome. Also a tool that cleanup your pc from garbage can delete those browser data.

Here is something that may help you with configuration

This have nothing todo with cookies. A local storage is used to save data.
Most people that reported this problem have some wrong settings enabled.
I don't be able to help you in this case because it's a very specific problem that presumably depends on your configuration. Maybe try firefox or use the "cloud" feature of bblog to save/reload your settings if they lost.

Ok cool. Thx for information.