I lost my Membership Account, will I lose my wallet?

In case you lose your Membership Account, your wallet will not lose. You could restore your wallet by following two options:
Option 1: Using your 12 words Passphrase to restore the wallet. See this for the instruction
Option 2: Using the the wallet recovery feature via the link sent in the registered email to restore the wallet (Only Newbies who registered in version 2.22 and above can use this function.). See this for the instruction.