Technical Analysis of Problems

After migrating WordPress to a new domain, internal links, contact forms, the sitemap, robots.txt, canonical URLs, and old redirects usually stop working. Visually, the site may load, but ads…

The site began loading on the new domain as the main operational version, the forms continued to accept submissions, and search and advertising links no longer led to a dead page.

The website is unstable: it occasionally fails to load, displays errors, or disrupts the user's path from an ad to the application form.

The owner receives not only a fully functional website, but also a clear explanation of the reasons behind the changes made and any remaining risks.

Every morning, the websites became inaccessible. Visually, it looked like a random server or SSL issue, but the consistent timing suggested a systemic cause.

The websites have stopped crashing regularly in the morning. The cause has been identified, rather than simply temporarily resolved by restarting the service.

Emails aren't being delivered, are ending up in spam, website forms aren't submitting requests, or the domain's email is configured across several incompatible services.

Email becomes traceable: it’s clear who receives the messages, who sends them, which records are responsible for them, and where to look for errors.

The email service technically existed, but there was no trust in the domain: MX, SPF, DKIM, DMARC, and SMTP settings were incomplete or inconsistent. For businesses, this means lost customer responses and…

Email delivery has become more reliable: messages are now being delivered more consistently, the domain now has normal email metrics, and the issue can now be monitored through specific checks.

It is unclear who controls the domain, DNS, hosting, email, CRM, advertising, 2FA, and backup access credentials after employees or contractors leave.

The owner understands where the keys to the infrastructure are, who has access, and which risks need to be addressed first.

The form indicates whether the submission was successful or failed without providing an explanation, but the request does not appear in email, CRM, or Telegram notifications.

After the fix, it's clear where the request is created, where it goes, which service confirms receipt, and where to look for errors if the process needs to be repeated.

When tested from a single computer, the site appeared to be working, but users on other networks couldn’t access it. This is a dangerous situation: the owner sees a 200 OK response, while actual customers see nothing…

We stopped searching for the problem blindly. It became clear where the site was actually accessible, where the connection dropped, and where we needed to use mirrors, proxies, or DNS.

I have a certificate, but the browser shows "Not secure," mixed content warnings appear, redirects go in circles, or part of the URL remains HTTP.

The user sees a single, consistent HTTPS address; the browser doesn't complain; and forms and external resources work without mixed content.

After changing the DNS, some traffic goes to the old IP address and some to the new one. As a result, users see different versions of the site and submit requests to different locations.

The domain consistently points to the correct server, the old website does not receive any unintended traffic, and the owner understands where the DNS is now managed.

The user submits the form, the website confirms that it was submitted successfully, but the request does not appear in the CRM or appears incompletely.

Requests don't just disappear: successful ones are created in the CRM, while problematic ones are sent to review with the reason for rejection.

After the migration, the site appears to be functioning normally, but search and ad links lead to the old URLs, resulting in 404 errors, incorrect canonical tags, and a broken sitemap.

The new domain becomes the primary production version without losing any requests due to broken links and technical clutter.