EVE Launcher won't update or need to re-authentication

I get almost everyday these errors when trying to log in, first it won’t install the update and tells me to verify the files which I always do. Then i have tried several times to close the launcher and start it again.
Then i get another message that I need to re-authentication my account in order for it to work and when i then press “Add account” the loading circle just keeps spinning and then puts me back to the start menu in the launcher.

It also says “An error occured whiel downloading client” and i can do anything. Some day it works and some days not… Its REALLY frustrating because its been like this for several months! Is there any other way to start EVE or anyone have a fix?

I use ShadowPC gameing services in order to play now because then I can use my work computer, the kids getting older so they got my old gaming PC. Shouldn’t be any problem using a rental computer in order to play. I can use my iPad when going on worktravels also so thats an plus.

Hope there is a solution out there!