A few good questions.
Do you hold my funds?
No. USDC stays in your wallet until each purchase settles; XLM returns to the same wallet.
What do I approve?
One Freighter transaction adds the hashes of your exact future purchases as pre-authorized signers. Freighter shows hashes, not the full future swaps. Damla decodes and verifies the terms in your browser before that prompt.
Can a purchase run early?
No. Stellar validators enforce the time window and minimum sequence age. The service can submit within an open window, but cannot move its start earlier.
What if the price jumps?
Your chosen ceiling fixes a minimum XLM amount. Above the ceiling, the purchase waits and may be skipped. No USDC leaves for a skipped purchase.
How do I stop?
Use Stop on your plan page. It asks the service to remove unused signers. For a hard stop, remove those signers from your Stellar account; moving USDC alone is not the same as revoking authorization.
Is mainnet available?
Not yet. Damla is live on Stellar testnet while mainnet launch checks continue.