Every deposit on WeTheNorth sits behind 2 of 3 multisig, so buyer coin is not held custodially by the operator while it is in escrow. But after an order releases, the coin appears on the wallet panel as regular buyer balance, not as multisig-locked. That balance is custodially held by the operator until the buyer withdraws.
The rule
Withdraw promptly after each order releases. The wallet balance you should keep is either zero (nothing pending) or exactly the amount for your next order plus a small buffer for network fees.
Why prompt withdrawal matters
A balance you can only recover from the storefront is a balance you lose if anything happens to the storefront. Seizure, exit scam, prolonged outage, key compromise. Any of these leaves you holding coin that is no longer yours in practice.
Withdrawing promptly limits your exposure to the current-order size, not the year-of-orders size. This is defence-in-depth beyond the multisig guarantee that already protects your escrowed coin.
Where to withdraw to
A wallet under your own keys. Feather Wallet or Cake Wallet for Monero. Sparrow or Electrum for Bitcoin. Not another custodial service. The whole point of withdrawing is to move the coin under your exclusive control.