Quite possible that one could experience disruption in the campaign creation flow, especially when a popup or an iframe is involved. Consider you’re attempting to create a test campaign. After specifying the campaign URL, you’re going to create your variations in the VWO Editor, which opens in a new tab. However, this process doesn’t occur as expected. Instead, you’re shown the following alert:
As a result, you will not be able to access the VWO Editor to create variations.
This popup is also displayed when connections disruptions are encountered while attempting the following actions for the respective campaign types or areas in VWO:
| Area | Scenario |
| A/B Test | Creating or editing variation |
| Previewing a campaign | |
| Viewing heatmaps and clickmaps | |
| Multivariate Test | Creating or editing combination |
| Previewing a campaign | |
| Viewing heatmaps and clickmaps | |
| Insights | Viewing heatmaps |
| Working on Views | |
| Working on Observations | |
| Clicking on Play / View button in Session Recordings | |
| Previewing a survey campaign | |
| Personalize | Creating or editing an experience |
| Previewing a campaign | |
| Viewing heatmaps and clickmaps | |
| Rollouts | Creating or editing an experience |
| Previewing a campaign | |
| Plan | Working on Observations |
| SmartCode | Using SmartCode checker |
These disruptions are due to the API calls (dev.visualwebsiteoptimizer.com) getting blocked. You can try out the following set of checks to overcome this:
Check Adblocker and Browser Extensions
Adblockers can potentially prevent the essential VWO popups and iframes from appearing. You can temporarily disable the adblockers and other browser extensions that could possibly be interfering with the API connection.
Firewall Restrictions
At times, your device’s firewall settings could be preventing the API from establishing a connection. Check your firewall configuration to ensure that it allows outbound connections to the API.
Other Technical Issues
Should there be other technical issues beyond the aforementioned possibilities, reach out to our support team by dropping an email to support@vwo.com for further assistance.