Should I always keep mining mode active?

No necesariamente, solo depende de cuánto estés dispuesto a ganar. Cuantos más amigos invites usando tu enlace de referencia personal, más Bitcoins obtendrás.

In addition, if you are interested to boost your earnings from mining, you can buy traffic to your personal referral link from global advertising platforms and traffic exchange networks like Google Adwords, Yahoo, Adcash, PropellerAds, Adsterra and many others. This will help you maximize your payouts significantly.