Unfortunately Jaksta Music Miner does not work properly under the latest macOS. Under macOS Sierra, browsers normally do not load webpages at all while Jaksta Music Miner is running. We do have a workaround. You'll need to use the Firefox browser. Start up Jaksta Music Miner and then open this link in Firefox:
It will ask you if you wish to trust the new Certificate Authority - tick the checkbox enabled "Trust this CA to identify websites" and then click OK. It should look like this:
You should then be able to use Firefox normally while Jaksta Music Miner is running.