diff --git a/.changeset/big-dogs-dance.md b/.changeset/big-dogs-dance.md
new file mode 100644
index 00000000..46cd8d69
--- /dev/null
+++ b/.changeset/big-dogs-dance.md
@@ -0,0 +1,7 @@
+---
+'@axis-backstage/plugin-jira-dashboard-backend': minor
+---
+
+Updated the resolveUserEmailSuffix function to return an empty string if the Jira user email suffix configuration is missing, preventing failures and providing better error logging.
+
+Modified the retrieval of project keys in the router module to handle multiple project keys specified in annotations, allowing for proper parsing and support for comma-separated values.
diff --git a/plugins/jira-dashboard-backend/src/config.ts b/plugins/jira-dashboard-backend/src/config.ts
index 74e040e7..c84a7381 100644
--- a/plugins/jira-dashboard-backend/src/config.ts
+++ b/plugins/jira-dashboard-backend/src/config.ts
@@ -25,7 +25,9 @@ export function resolveUserEmailSuffix(config: Config): string {
   try {
     return config.getString(JIRA_USER_CONFIG_EMAIL_SUFFIX);
   } catch (error) {
-    throw new Error(`Invalid Jira user path, ${error}`);
+    console.error(`Invalid Jira user path, ${error}`);
+    // Return an empty string as the default value
+    return '';
   }
 }
 
diff --git a/plugins/jira-dashboard-backend/src/service/router.ts b/plugins/jira-dashboard-backend/src/service/router.ts
index 6f77d47e..5f8a5437 100644
--- a/plugins/jira-dashboard-backend/src/service/router.ts
+++ b/plugins/jira-dashboard-backend/src/service/router.ts
@@ -106,7 +106,7 @@ export async function createRouter(
         return;
       }
 
-      const projectKey = entity.metadata.annotations?.[projectKeyAnnotation]!;
+      const projectKey = entity.metadata.annotations?.[projectKeyAnnotation]?.split(',')!;
 
       if (!projectKey) {
         const error = `No jira.com/project-key annotation found for ${entityRef}`;
@@ -118,11 +118,11 @@ export async function createRouter(
       let projectResponse;
 
       try {
-        projectResponse = await getProjectResponse(projectKey, config, cache);
+        projectResponse = await getProjectResponse(projectKey[0], config, cache);
       } catch (err) {
-        logger.error(`Could not find Jira project ${projectKey}`);
+        logger.error(`Could not find Jira project ${projectKey[0]}`);
         response.status(404).json({
-          error: `No Jira project found with key ${projectKey}`,
+          error: `No Jira project found with key ${projectKey[0]}`,
         });
         return;
       }
@@ -149,7 +149,7 @@ export async function createRouter(
         );
       }
 
-      let issues = await getIssuesFromFilters(projectKey, filters, config);
+      let issues = await getIssuesFromFilters(projectKey[0], filters, config);
 
       let components =
         entity.metadata.annotations?.[componentsAnnotation]?.split(',') ?? [];
@@ -157,12 +157,12 @@ export async function createRouter(
       /*   Adding support for Roadie's component annotation */
       components = components.concat(
         entity.metadata.annotations?.[componentRoadieAnnotation]?.split(',') ??
-          [],
+        [],
       );
 
       if (components) {
         const componentIssues = await getIssuesFromComponents(
-          projectKey,
+          projectKey[0],
           components,
           config,
         );
@@ -194,10 +194,10 @@ export async function createRouter(
         return;
       }
 
-      const projectKey = entity.metadata.annotations?.[projectKeyAnnotation]!;
+      const projectKey = entity.metadata.annotations?.[projectKeyAnnotation]?.split(',')!;
 
       const projectResponse = await getProjectResponse(
-        projectKey,
+        projectKey[0],
         config,
         cache,
       );
@@ -205,7 +205,7 @@ export async function createRouter(
       if (!projectResponse) {
         logger.error('Could not find project in Jira');
         response.status(400).json({
-          error: `No Jira project found for project key ${projectKey}`,
+          error: `No Jira project found for project key ${projectKey[0]}`,
         });
         return;
       }