The last option c=XVG-blake2s is wrong and will lead to get not paid in Verge Coin from the pool. c=XVG will be correct!
As it states on the pool page:

"YOU MUST ALWAYS set your currency in your password field that matches your wallet address: c=SYMBOL. The pool has mined hundreds of different coins and many have the same address version. We CAN NOT read your mind and possible know what currency you want. If no c=SYMBOL is set, your currency will be randomly chosen from any matching coins we have used. This HAS TO BE A REAL EXCHANGE SYMBOL. Do not use a symbol that has an ALGO added. Such as XVG-blake2s or AUR-sha or DGB-skein, these are ALL WRONG. These are used only for the pool to support multi-algo coins.
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