Thank you for your question,this way is very helpful with English slang study.

I was having trouble with going into the Answers page this week but it's OK now.

Or were you asking for a translation?? "Acting up" means "not working properly" or "having problems", or "malfunctioning". "What gives?" means "what's wrong" or "why did that happen"? And "man", in this case, is a pronoun. It is slang. Instead of saying "What gives, Charlie?", I can say, "What gives, man?"

Charlie if you're native, why do not you understand this slang? (i'm curious) italki is overloaded and it's really working very slow.

What problem are you having. Mine has always been very slow.