At 02:30 UTC on 12 May 2021 the Quote Value Ratio (QVR) rule parameters will be changed for XBTUSD as follows: - Free quotes allowed per hour will increase from 2,000 to 3,600. - The number of quotes allowed per 1 XBT traded per hour for the XBTUSD perpetual swap contract will increase from 1,000 to 10,000. For more information, please contact Support.