This was reported on the Roscosmos website.

It is noted that "based on the test results, the commission decided to refuel the launch vehicle and launch it at 21:07:19 Moscow time on September 14, 2021."

Earlier it was reported that the state commission made a decision to take the Soyuz-2.1b carrier rocket with a group of British communications satellites OneWeb to the launch pad of the Baikonur cosmodrome on September 11.