Your device is not allowed to access this page

The web site administrators have apparently not updated their browser-sniffing logic in many years. And they clearly have a bug here. Browser sniffing is increasingly considered a questionable web site coding practice, and most mainstream browsers are entirely eliminating the browser ID string, rendering this whole approach broken. (Chrome is removing the user agent entirely, and they’re not the only folks doing this.)

Whatever implementation or software package is in use here is far out of date.

Microsoft Internet Explorer is gone, replaced by Microsoft Edge. Firefox is presently at 73, Chrome at 80.

All of the web browsers on iOS and iPadOS are based on Safari, so they may well all fail similarly.

Contact the web site admins. They probably know about this, though.

For expediency, I suspect you’ll have to use a different computer, possibly one running an older version of Windows.

Try another browser.

Do you have access to a computer to see if the website will load there? If may not be device compatible.