It is trying to generate another encrypted key file. One would have been made when you first generated your wallet, if you are trying to give it the same name in the same file directory it will give you this warning. Try opening wallet from file and finding that key file on your computer (should just be the name you gave your wallet .key). You should…
Look at the section on using a remote node if you want to start using the wallet straight away. You can still transfer to your address even if the blockchain is not syncd yes and it will appear once that part of the blockchain is syncd (which would be the most recent blocks meaning you won’t see it until the whole chain is syncd.)
Mining has gotten to the point were it is barely profitable for individual miners. This
If you want to try make money for users of your site do some research into coinhive (https://coinhive.com/).
When connecting to a remote node you do not have to do the CL stuff at all it should work just by opening the GUI > going to settings > putting in xmrag4hf5xlabmob.onion. Sorry I should have specified that a bit more clearly!