If you want to be always logged into web sites, you need to find, on each site that you visit, (usually on the log in page) an option called something like "keep me logged in". usually a check/tick box. You need to do this once, at login, for each site that you visit. If you had previously done this for a number of sites, but now they are all gone back to making you log in, then possibly you deleted all of your cookies, or maybe you have started using a different browser?