BTW, further to 'momcqueen's' comments above about certain German words, many modern computer tech words are actually not German at all.
The German language has borrowed heavily and happily from the English over the past 40 to 50 years, rather than inventing new terms of its own. Old technical words, like "Sauerstoff" for oxygen, or "Flugzeug" for airplane, required creative combinations of imagery. I guess the Germans got tired of thinking up new compound words. Those nouns clamped together, sometimes in long trains, used to be the hallmark of the language.
So words like "Email" and "einloggen" are actually direct, modern borrowings. The word "Passwort" is a lot older, but the "pass" part (in this meaning) was borrowed from the French a very long time ago. (P.S. Every German noun has an initial capital letter, although I see some modern German publications are even ignoring that old rule. It occurs to me this might also be the OP's issue with signing in).
