Troubleshooting

You see	What to do
"Associate the order NFT collection"	Your account has no free auto-association slot. Press Associate (HIP-719), then place the order.
A fill credited instead of paid	You weren't associated with the output token when it filled. Associate it, then `claim(token)`.
Budget empty	The order only has its reserve left. Top it up on the order page; checks resume.
Held by guard	The pool is too far from Chainlink or a feed is stale. The order waits and retries with back-off. See `yarn foundry:pool-gap`.
Checks stopped	Press Restart checks (anyone can), or top up an order.
"Status may be up to N s behind"	The mirror node trails consensus. Order state from the contract is current; the trail catches up.
HBAR amounts off by 10^10 in your own code	Wallets send HBAR as 18-decimal weibar in `value`; the contracts count 8-decimal tinybar. Convert only through `utils/orders/units.ts`.
Your own call to the vault reverts with no reason, using all its gas	The relay's `eth_estimateGas` undercounts Token Service and Schedule Service work (a placement estimated at 551,766 gas needs up to 2.8M). Pass an explicit limit; `utils/orders/gas.ts` has measured ones. Hedera bills only the gas used.
Deploy fails with insufficient funds	Fund the deployer with at least 25 testnet HBAR; the NFT collection alone costs about 15.