feat(pgw): add troubleshooting index (#4620)

Author: RoRoJ

pages/public-gateways/troubleshooting/index.mdx

@@ -1,8 +1,68 @@
 ---
 meta:
   title: Public Gateways - Troubleshooting
-  description: Public Gateways Troubleshooting
+  description: Find troubleshooting resources for resolving issues with Scaleway Public Gateways.
 content:
   h1: Public Gateways - Troubleshooting
-  paragraph: Public Gateways Troubleshooting
+  paragraph: Find troubleshooting resources for resolving issues with Scaleway Public Gateways.
+dates:
+  posted: 2025-03-14
+  validation: 2025-03-14
+categories:
+  - network
 ---
+
+<ProductHeader
+  productName="Public Gateways troubleshooting"
+  productLogo="publicGateway"
+  description="Learn how to fix the most common issues with Scaleway Public Gateways."
+/>
+
+## Featured Pages
+
+<Grid>
+    <DefaultCard
+      title="Public Gateways FAQ"
+      description="Answers to common questions"
+      url="/faq/public-gateways/"
+      label="See more"
+    />
+    <DefaultCard
+      title="Configuring a Public Gateway"
+      description="Get your gateway up and running"
+      url="/public-gateways/how-to/configure-a-public-gateway/"
+      label="See more"
+    />
+    <DefaultCard
+      title="Using SSH bastion"
+      description="Connect to resources behind a gateway"
+      url="/public-gateways/how-to/use-ssh-bastion/"
+      label="See more"
+    />
+</Grid>
+<Grid>
+    <DefaultCard
+      title="Solving SSH connection problems"
+      description="Troubleshoot common issues"
+      url="/public-gateways/troubleshooting/cant-connect-to-instance-with-pn-gateway/"
+      label="See more"
+    />
+    <DefaultCard
+      title="Gateway services not working"
+      description="Resolve typical problems"
+      url="/public-gateways/troubleshooting/gateway-services-not-working/"
+      label="See more"
+    />
+    <DefaultCard
+      title="IPAM-mode vs Legacy gateways"
+      description="What's the difference?"
+      url="/public-gateways/concepts/#ipam"
+      label="See more"
+    />
+</Grid>
+
+## Public Gateway troubleshooting pages
+
+- [I cannot connect to my Instance using SSH after attaching it to a Private Network with a Public Gateway](/public-gateways/troubleshooting/cant-connect-to-instance-with-pn-gateway/)
+- [I attached the Public Gateway to my Private Network, but the gateway services are not working](/public-gateways/troubleshooting/gateway-services-not-working/)
+- [Public Gateway limitations](/public-gateways/troubleshooting/gw-limitations/)