API related errors

Can't fill in my API key on Mobile
Too many requests, checkpositions on: ST
Invalid / Disabled market error for chart data on URL:
Coin temporarily unavailable at exchange. Message: Automated Maintenance.
There was a http error. HTML returned when expecting JSON
Invalid API key in your config.
Nonce must be greater than error Poloniex
Binance error. Code: -1000 Message: An unknown error occured while processing the request.
I have linked my exchange but the hopper doesn't do anything