Adobe Acrobat Pro DC is opening old versions of PDF files, Why?

I see this is an issue that is affecting many and I cannot find a solution. I have adobe acrobat Pro DC and as many users, I pay monthly but I am finding so many problems with this issue. I have spent hours breaking my head trying to figure out what's going on. To summarize, I creat a PDF file with a specif name, for Example: "Report247.pdf" it opens just fine without any problem. Then I did updates on my report and created the file and again and replaced the original file with the new one. It saves it but when I open it, it shows me the old version. WHY? I have spent hours trying to figure out what I did wrong. Then I opened the file with another PDF app (NOT ADOBE). The file is correct!!!! Why do I get this problem with ADOBE ACROBAT PRO DC? What is the solution? I tried checking for updated and I am already up to date and no solution. My Adobe Acrobat Pro DC is version 2022.002.20212  Please let me know what is going on and how to fix it.