I am trying to understand the POS mechanism is DAEX.
Is every wallet able to participate in the DAEX ecosystem as a validator?
I found this question you also asked for the DAEX Telegram, and they also answered you right there. Please check your telegram messages.
The original answer for you:
"Make sure you are using a secure ERC20 wallet such as MetaMask, Mist, MEW etc. Exchange wallets are not eligible, and any ETH sent from an exchange wallet will not be accepted!"