This is usually a browser cache issue. To clear your browser’s cached data, please follow these steps from Google- note that they apply to Google Chrome, the suggested browser for Proof.
These steps may clear your browser data and may remove any passwords you have saved in Chrome.
Please note the support article from Google contains methods for your computer, iPhone, or Android Device. We recommend using Google Chrome with Proof; however, other browsers may require different steps than those above, as contained in the link. If the issue persists and you're still unable to load a page on the Proof platform or download files, please contact our support team at support@proofserve.com.
We would be happy to review it further 🚀