diff --git a/packages/merchant-backoffice-ui/src/components/form/InputCurrency.tsx b/packages/merchant-backoffice-ui/src/components/form/InputCurrency.tsx
index 3b84855da..b02354d7c 100644
--- a/packages/merchant-backoffice-ui/src/components/form/InputCurrency.tsx
+++ b/packages/merchant-backoffice-ui/src/components/form/InputCurrency.tsx
@@ -58,7 +58,7 @@ export function InputCurrency<T>({
       inputType="number"
       expand={expand}
       toStr={(v?: Amount) => v?.split(":")[1] || ""}
-      fromStr={(v: string) => (!v ? "" : `${config.currency}:${v}`)}
+      fromStr={(v: string) => (!v ? undefined : `${config.currency}:${v}`)}
       inputExtra={{ min: 0 }}
     >
       {children}
diff --git a/packages/merchant-backoffice-ui/src/hooks/instance.ts b/packages/merchant-backoffice-ui/src/hooks/instance.ts
index c9eb84e74..9c76c3381 100644
--- a/packages/merchant-backoffice-ui/src/hooks/instance.ts
+++ b/packages/merchant-backoffice-ui/src/hooks/instance.ts
@@ -223,9 +223,11 @@ export function useInstanceKYCDetails(): HttpResponse<
     HttpResponseOk<MerchantBackend.Instances.AccountKycRedirects>,
     RequestError<MerchantBackend.ErrorDetail>
   >([`/private/kyc`], fetcher, {
-    refreshInterval: 5000,
+    refreshInterval: 60 * 1000,
     refreshWhenHidden: false,
     revalidateOnFocus: false,
+    revalidateIfStale: false,
+    revalidateOnMount: false,
     revalidateOnReconnect: false,
     refreshWhenOffline: false,
     errorRetryCount: 0,