MareenG

I got several `failed to fetch` error messages today and and the error message displayed in #357. As a user it is hard to understand what is going on.

I started a list to collect the error messages. [Here](https://docs.google.com/spreadsheets/d/1JWQHjoY-wxIleIQeDue8smw7CBiDLsoziOlPhZ5hAGc/edit#gid=0) we can add info on what caused the error and if it needs rewording and/or improved presentation

I experienced another issue when switching between networks #1421. Maybe there is a connection?

Not reproducible in v1.0.0 closing it

True, it still reverts but doesn't show enter a valid slippage percentage anymore

Also happens if you place a buy order and change the TO amount https://user-images.githubusercontent.com/34510341/128047386-4b0812a2-2892-403c-905b-a98c18c57565.mov

[Here ](https://www.figma.com/file/bcoZf5RIgVKDItdOaTZq18/GP-Swap?node-id=1310%3A2)it is also shown with an ? in both cases