diff --git a/frontend/src/components/Form/DNSProviderFields.tsx b/frontend/src/components/Form/DNSProviderFields.tsx
index ac0c81eb..18265481 100644
--- a/frontend/src/components/Form/DNSProviderFields.tsx
+++ b/frontend/src/components/Form/DNSProviderFields.tsx
@@ -116,7 +116,7 @@ export function DNSProviderFields({ showBoundaryBox = false }: Props) {
 									type="number"
 									className="form-control"
 									min={0}
-									max={600}
+									max={7200}
 									{...field}
 								/>
 								<small className="text-muted">
diff --git a/frontend/src/locale/IntlProvider.tsx b/frontend/src/locale/IntlProvider.tsx
index 42b98b65..5482f63c 100755
--- a/frontend/src/locale/IntlProvider.tsx
+++ b/frontend/src/locale/IntlProvider.tsx
@@ -47,6 +47,7 @@ const getFlagCodeForLocale = (locale?: string) => {
 	const specialCases: Record<string, string> = {
 		ja: "jp", // Japan
 		zh: "cn", // China
+		vi: "vn", // Vietnam
 	};
 
 	if (specialCases[thisLocale]) {