This is the most unpleasant thing that can happen when creating a site, not counting completely reversed or lost code.
Unfortunately, however, there are no laws now that protect your copyright. The only thing you can do is argue with your competitors and ask them to delete their site or design. As proof, you can show versions of the site, screenshots, pages, and correspondence with the designers. I think good designers or design teams always keep files about the previous website makeover because it's important to keep it in the archive in case of data loss. I believe this is a professional approach to website development.
One thing that you can try to access your browser is check for any browser reset options. It would get you off all the cache, history, download data, plus any malicious cookies or content that is preventing you to run google searches. Let me know if it helps! You may also try deleting the browser and reinstalling it to check if resolves the issue.
@leocg Thanks! I added User-Agent-Switcher. Fumbling and bumbling around, I got to the meaty part of the site using Opera. But I still wonder why sites, at least newer sites block Opera? I recall earlier versions of Opera could spoof by directly identifying as another browser or some other level of id. I guess I will never know.
Yes, more modern laptops come equipped with newer OS, but you can generally install the updated system with minimal effort on your end. For example, if your laptop is still running on Windows 8 and you want Windows 10, you'll need to erase Windows 8 from your hard drive and download the newer version 💻
If you are using from the same laptop/Desktop you need not to, until you log out from your device which will be listed in whats app web. If you will log out from there, You need to do it again. Still you can try other types of Whatsapp from alternative app market. If there are some... You will find detailed description anyway.
From security reasons it is recommended to Log out from your device each time you close your whats app web.