When working as a web developer, you often come across a variety of technical issues that challenge your problem-solving skills. One such instance occurred recently with a regular client of mine.
I was recently fixing a simple bug for a regular client of mine. His site is hosted on Bluehost, and some of his customers started complaining to him that when they accessed the site, the whole design was broken. This was the first time I had encountered such an issue.
Usually, such problems are caused by aggressive settings in some optimization plugins. Sometimes just cleaning the cache is enough. But in this case, I found that there were many 409 errors in the console. Also, I want to note that in logged-in form, the site was displayed normally. The problem was only in the unlogged form and for some IP addresses.
I started to disable plugins one by one and saw that the problem completely disappeared if I disabled the Contact Form 7 plugin.
The fix for this problem is very simple. I renamed the folder with the contact-form-7 plugin to form-7 and reactivated the plugin. After that, the problem completely disappeared and did not appear again.
I also want to note that tech support could not help the client; they said that the problem was that some IPs were blacklisted. So if you encounter a similar problem, try my simple solution. Best of luck!
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