cannot open a adobe file from government site. tried everything I know

If you cannot open an Adobe file from a bhu government site despite trying multiple solutions, start by ensuring you have the latest version of Adobe Acrobat Reader installed. Clear your browser's cache and cookies, as they may be causing issues with the download or access process. If the file is still inaccessible, try opening it with a different browser or downloading it directly to your device instead of viewing it online. Ensure the file isn't corrupted by verifying its size or re-downloading it. If none of these steps work, contact the website's support team for assistance, as the issue may be on their end.

To open this kind of doucuments. Click on the original link from the government account. When it tells you the error message "The document you are trying to download .......", you download that pdf file containing the error message to a folder on your pc eg, Dowloads. Whe its downloaded, go the folder via file explorer and open the file from there, the form will open.

That is not a government site from Canada.

In the title of your  inquiry you said "cannot open a adobe file from government site"

 And then you say you've downloaded from that shady URL from the document cloud.

The official Canadian government  link to renew (or apply ) for permanent residency is this:

https://www.canada.ca/content/dam/ircc/migration/ircc/english/pdf/kits/forms/imm5444e.pdf 

Whatever you uploaded to the URL you specified yields a message:

               We're not able to open this document. It's either corrupted or the file type isn't supported.

Apparently it is labelled as a PDF file, but isn't and where it was uploaded to on the Adobe Document Cloud won't display it or allow its download. Nothing we can do to assist you here from Adobe.