Not only this sites is unreliable but also it is a malicious website designed to inflate bitcoin fees to unreasonable levels. It has always been reporting outrageously high fees.
For example right now it is still reporting 102 satoshis/byte and calls it "fastest and cheapest transaction fee" whereas even in worst case scenario in the past couple of days the "fastest and cheapest transaction fee" never surpassed 30 and right now it is around 2-3 satoshi/vbytes. In other words this site is maliciously reporting a fee that is 3400% higher!

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ps. anyone can give a quick explanation on the Byte Vs vByte difference?
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vbytes is the virtual bytes calculated by taking witness into account (everything gets a factor of 4 except witness) so the size is smaller for SegWit transactions hence you pay less fee.