Returns the number symbol (#) as a result

Hi.
For days (literal) I have been trying to locate a “something” that makes, when visitors enter my site from some countries (such as the US), they are derived from some of my articles (such as; https://atutrabajo.org / how-to-respond-job-interview) to another site (https://elpaisactual.com/portada-2/)

Ergo, I have searched (with String Locator) for something related to that site, both in text (https: // elpaisactual .com / portada-2 /) as in encoded language, both in Base64 (aHR0cHM6Ly9lbHBhaXNhY3R1YWwuY29tL3BvcnRhZGEtMi8NCg == “but in these cases it shows only a” BvcnRhZGEtMi8NCg == “result, both in Base64 (aHR0cHM6Ly9lbHBhaXNhY3R1YWwuY29tL3BvcnRhZGEtMi8NCg ==) and in these cases it shows a” BZNZE ” , the pound sign (#) Which is very strange because, I have tried a lot of other “possibilities” (expressions related to viruses that I found on the internet) and, although, I still did not find anything suspicious, at least in the other options, it gave me results (that is, the expression that contains the phrase searched, in which file it is, in which line of code, etc.)

But, compared to the search of those 3 expressions, the only result that appears is # and, it does not even tell me in which file or line code could find it. Could you inform me what may be happening? Thank you.

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