Questions
Everything worth asking before you deposit.
Including the answers that are not flattering. A yield product that dodges the risk question is not one you should use.
A receipt for the XLM you deposited. The quantity you hold never changes; what changes is how much XLM one nXLM is worth. It behaves like an ordinary Stellar token, so you can hold it, trade it on SDEX, send it, or use it elsewhere while it keeps earning.
Still unclear?
The contracts are open source and the whole mechanism is written up in plain language. If something here does not add up, the code is the final answer.