I've been using a PC to access my account when I would prefer to use my MAC like I have for the past 9 yrs.
Earlier Mac models
This is Chase Bank's problem to fix. They need to stop using the outdated and privacy-intrusive "user agent" query as the means to determine if a browser can handle their website, which was never a good idea to begin with.
If you are motivated to do so direct their attention to this excerpt from Apple's Safari Developer Documentation (emphasis added):
Important
Use feature detection to enable or disable functionality instead of relying on the name or version of the browser in the User Agent string. Learn how to detect available features on MDN…
The passage regarding feature detection in that document uses even stronger language:
"... this is a terrible practice that should be discouraged at all costs."
Unfortunately, Chase's continued and inexcusable use of that terrible practice leaves you out in the cold until they realize the error of their ways and correct it.
The workaround for end users who are unable to update their Macs to a newer macOS version is to use a different browser.
Consider Brave:
Firefox is a distant second choice:
https://www.mozilla.org/en-US/firefox/new/
The bottom line is that there is nothing wrong with your Mac's version of Safari, but that bank is using an outdated and ill-conceived method of determining browser requirements.
As Niel wrote:
... this issue is with how their website checks browser compatibility.
Exactly.
This is Chase Bank's problem to fix. They need to stop using the outdated and privacy-intrusive "user agent" query as the means to determine if a browser can handle their website, which was never a good idea to begin with.
If you are motivated to do so direct their attention to this excerpt from Apple's Safari Developer Documentation (emphasis added):
Important
Use feature detection to enable or disable functionality instead of relying on the name or version of the browser in the User Agent string. Learn how to detect available features on MDN…
The passage regarding feature detection in that document uses even stronger language:
"... this is a terrible practice that should be discouraged at all costs."
Unfortunately, Chase's continued and inexcusable use of that terrible practice leaves you out in the cold until they realize the error of their ways and correct it.
The workaround for end users who are unable to update their Macs to a newer macOS version is to use a different browser.
Consider Brave:
Firefox is a distant second choice:
https://www.mozilla.org/en-US/firefox/new/
The bottom line is that there is nothing wrong with your Mac's version of Safari, but that bank is using an outdated and ill-conceived method of determining browser requirements.
As Niel wrote:
... this issue is with how their website checks browser compatibility.
Exactly.
Safari 16 Release Notes | Apple Developer Documentation says that version 16 is available as an update on macOS Monterey and macOS Big Sur [only].
Version 15 was current during 2021-2022 should be recent enough to comply with a high-security demands such as Internet banking. Are you reporting that Safari 15 fails to work for your Internet banking, or that you have been advised to upgrade it? The latter isn't possible for Catalina.
Edit - as Neil says, find another browser.
Use a different web browser for it on the Mac, or upgrade the computer's OS if possible, or contact Chase; this issue is with how their website checks browser compatibility.
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If I have Safari 15 and websites require 16; how do I get the latest version?
