If you withdrew your ETH vouches before the sale, that ETH is already back in your wallet and you probably used it for the WHUF auction — the conversion flow only applies to vouches that are still active. That doesn’t affect your price guarantee.
What actually matters for the guarantee
The price guarantee is about your WHUF from the sale, not your old ETH vouches. To secure it, vouch your WHUF for people you trust before the window closes:
1. Log in with the wallet that received your WHUF.
2. Open the vouch that you had active before the sale and you'll be able to activate this vouch again using WHUF.
3. Enter a WHUF amount and confirm in your wallet.
See How to secure your price guarantee for the full requirements and the window countdown.