There are reports than in some cases Chrome Extensions are causing conflicts with Prompt.io. Disabling these extensions while using Prompt.io may be helpful.
- Click the ... button in the upper right corner of the browser
- Select "More Tools"
- Select Extensions
- Toggle all extensions "off" — the little blue slider on each extension.
- Alternatively, there is a single Chrome Extension that can be installed that will disable/enable all the others with a single click. This extension should be safe to use with Prompt.io.