fix: provider is by default null and account page redirect to provider setup (#437)

src/pages/top-up/GiftCardFund.tsx

@@ -31,7 +31,7 @@ export function GiftCardFund(): ReactElement {
   const navigate = useNavigate()
 
   useEffect(() => {
-    if (!privateKeyString) {
+    if (!privateKeyString || !provider) {
       return
     }
 
@@ -43,7 +43,7 @@ export function GiftCardFund(): ReactElement {
   }
 
   async function onFund() {
-    if (!wallet || !nodeAddresses) {
+    if (!wallet || !nodeAddresses || !providerUrl) {
       return
     }
 

src/pages/top-up/GiftCardTopUpIndex.tsx

@@ -24,6 +24,8 @@ export function GiftCardTopUpIndex(): ReactElement {
   const navigate = useNavigate()
 
   async function onProceed() {
+    if (!provider) return
+
     setLoading(true)
     try {
       const wallet = new Wallet(giftCode, provider)

src/pages/top-up/Swap.tsx

@@ -45,7 +45,7 @@ export function Swap({ header }: Props): ReactElement {
   const bzzAfterSwap = new BzzToken(daiToSwap.toBigNumber.dividedToIntegerBy(200))
 
   async function onSwap() {
-    if (hasSwapped) {
+    if (hasSwapped || !providerUrl) {
       return
     }
     setLoading(true)