How to stop all cookies being erased and all log ins gone

[bjm]

Maybe, your browser on close is deleting cookies per your browser settings.  

• https://www.pcmag.com/how-to/how-to-control-and-delete-cookies-on-your-browser

If you suspect Norton is deleting cookies.  Try Tracking Cookie Scan > Ignore

FWIW ~ my preference is Tracking Cookie Scan > Ignore

FWIW ~ I retain persistent login cookies via CCleaner. 

• https://www.ccleaner.com/docs/ccleaner/ccleaner-settings/choosing-which-cookies-to-keep
• https://support.piriform.com/hc/en-us/articles/204043804-Why-do-I-need-to-log-back-in-to-websites-after-cleaning-
• https://support.piriform.com/hc/en-us/articles/360045043212#29-websites-that-work-with-intelligent-scan--0-2