doktor83,
B2N is no longer supported?
Today program has stopped connecting to devpool srbminer.com:443, when b2n is mined. And  load on processor grows, then mining stops "there is no connection with devpool." Although  site srbminer.com works with my ip, cloudflare does not ban me.
But when other coins are mined, such as XMR, CCX, connection to devpool is good.