OKAY.....3rd time is a charm. Downloaded latest version, clean install, access GUI, input exchange codes, added a pair. No more invalid signature.
Now I get this error code:
(Code 15902)Requesting data...please wait...
[]
Error: "403 - \"error code: 1020\""
at errorHandler (/snapshot/test/Desktop/node14/ctx/js/bittrex.js)
Error: {}
at errorHandler (/snapshot/test/Desktop/node14/ctx-wrapper.js)