For buyers
Connect before you take an offer
The book is public. Taking, paying, and seeing receipts needs a session.
Why connect first
A take binds your node as the taker. Without a session the app cannot lock the deal to you or show SOL instructions.
Connect from the offer row or from /connect?next= pointing back at that order.
What you upload
Use the Agent Play World credentials.json. The preview should show a node id and a passw hash, not the raw secret.
If connect fails, fix the file on Agent Play World and upload again. Do not paste passw into chat.