diff --git a/lnbits/extensions/satspay/templates/satspay/index.html b/lnbits/extensions/satspay/templates/satspay/index.html
index 58b59b0d..1bb5d2b1 100644
--- a/lnbits/extensions/satspay/templates/satspay/index.html
+++ b/lnbits/extensions/satspay/templates/satspay/index.html
@@ -282,41 +282,10 @@
 <style></style>
 <!-- todo: use config mempool -->
 <script src="https://mempool.space/mempool.js"></script>
+<script src="{{ url_for('satspay_static', path='js/utils.js') }}"></script>
 <script>
   Vue.component(VueQrcode.name, VueQrcode)
 
-  const mapCharge = obj => {
-    obj._data = _.clone(obj)
-    obj.theTime = obj.time * 60 - (Date.now() / 1000 - obj.timestamp)
-    obj.time = obj.time + 'mins'
-
-    if (obj.time_elapsed) {
-      obj.date = 'Time elapsed'
-    } else {
-      obj.date = Quasar.utils.date.formatDate(
-        new Date((obj.theTime - 3600) * 1000),
-        'HH:mm:ss'
-      )
-    }
-    obj.displayUrl = ['/satspay/', obj.id].join('')
-    return obj
-  }
-
-  const sleep = ms => new Promise(r => setTimeout(r, ms))
-  const retryWithDelay = async function (fn, retryCount = 0) {
-    try {
-      await sleep(25)
-      // Do not return the call directly, use result.
-      // Otherwise the error will not be cought in this try-catch block.
-      const result = await fn()
-      return result
-    } catch (err) {
-      if (retryCount > 100) throw err
-      await sleep((retryCount + 1) * 1000)
-      return retryWithDelay(fn, retryCount + 1)
-    }
-  }
-
   new Vue({
     el: '#vue',
     mixins: [windowMixin],