diff --git a/getting-started/solving-a-bounty/claim-reward-criteria-and-troubleshooting-guide.md b/getting-started/solving-a-bounty/claim-reward-criteria-and-troubleshooting-guide.md
index cd28d7d..9e9868a 100644
--- a/getting-started/solving-a-bounty/claim-reward-criteria-and-troubleshooting-guide.md
+++ b/getting-started/solving-a-bounty/claim-reward-criteria-and-troubleshooting-guide.md
@@ -258,3 +258,24 @@ _Both steps are essential for successful reward processing_
 {% endhint %}
 
 For additional assistance, join the Lightning Bounties [Discord](https://discord.gg/zBxj4x4Cbq) community.
+
+***
+
+## Common platform error messages
+
+| Platform message | Meaning | What to do |
+|------------------|---------|------------|
+| *Invalid pull request. Make sure it is merged into default branch.* | PR is still open, draft, or not merged to `main`/`master` | Wait for merge into the repository default branch, then claim again |
+| *No winner found* | Issue not closed/linked, or claim not ready | Confirm PR body has `close #N`, issue is closed by the merge, then retry |
+| Reward shows locked / claim does nothing | Lock time not finished (`unlocks_at` in the future) | Wait until the bounty unlocks, then claim |
+| Logged in but claim fails for your PR | Different GitHub identity | Log out of Lightning Bounties and log in with the **same** GitHub account that opened the PR |
+
+### Quick pre-claim checklist
+
+1. PR shows **Merged** on GitHub into the **default** branch  
+2. PR description contains `close #<issue-number>` (not only a later comment)  
+3. GitHub issue is **Closed**  
+4. LB issue page shows **no Winner** trophy yet  
+5. Reward lock time has passed  
+6. You are logged into LB as the PR author  
+
diff --git a/getting-started/solving-a-bounty/how-to-convert-sats-into-local-currencies.md b/getting-started/solving-a-bounty/how-to-convert-sats-into-local-currencies.md
index 673a3c9..5876ab0 100644
--- a/getting-started/solving-a-bounty/how-to-convert-sats-into-local-currencies.md
+++ b/getting-started/solving-a-bounty/how-to-convert-sats-into-local-currencies.md
@@ -94,7 +94,7 @@ If you want to end up with MXN in a Mexican bank account, the common flow is:
 
 ### **4a. Choose an exchange that supports MXN withdrawals**
 
-The exchange you choose should be able to:
+Examples people in Mexico often use include Coinbase (where MXN is available) and Bitso. The exchange you choose should be able to:
 - Hold an MXN balance
 - Let you sell BTC -> MXN
 - Withdraw MXN to a Mexican bank account (often via CLABE)
@@ -105,6 +105,8 @@ Rules, fees, and availability can change. If you are moving a meaningful amount,
 
 ### **4b. Deposit BTC to the exchange**
 
+If you earned sats on Lightning Bounties, prefer a **Lightning deposit** when the exchange supports it (generate a LN invoice in the exchange, withdraw from LB). Otherwise:
+
 1. Create a BTC deposit address in the exchange app.
 2. Send BTC from your current wallet/exchange to that deposit address.
 3. Wait for the deposit to confirm.