Contact your hosting support and check if this is actually the case. If necessary, ask for an increase in the client_max_body_size or post_max_size value .
If the above solutions do not work, the problem may be related to greece phone number server configurations. Contact your hosting's technical support for further verification.
Prevent 400 Bad Request Error
Yes, there are good maintenance practices that can reduce the risk of such errors.
First of all, keep WordPress, plugins and themes always up to date . This will allow you not only to have your site always secure, but also to avoid compatibility problems between plugins, themes and WordPress.
Also, regularly clear your browser's cache and cookies . Sometimes this data can cause unexpected errors, so it's always better to clean it once in a while.
To check that your site is not experiencing technical problems, use monitoring tools such as Google Search Console. Some errors are reported in your reports.
Conclusion
Error 400 can be frustrating, but it can often be fixed with a few simple steps. If you can't fix it yourself, seek the help of an expert to avoid more serious problems.
Need WordPress support? Schedule a free call with the SOS WP team for personalized help!