Can't Change passowrd to secure gateway connect error SAE-080018

I have tried this solution and it does not seem to work.

https://www.dell.com/community/Secure-Connect-Gateway/Reset-admin-password/td-p/8038312

I get the following error

HTTP/1.1 400 Bad Request
Content-Security-Policy: script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; object-src 'self'
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
X-Content-Type-Options: nosniff
Strict-Transport-Security: max-age=15768000
X-Download-Options: noopen
X-XSS-Protection: 1; mode=block
X-FRAME-OPTIONS: SAMEORIGIN
transfer-encoding: chunked
Content-Type: application/json

{"type":"ERROR","code":"SAE-080018","message":"We can't continue with this password. Make sure your password doesn't have any invalid characters, then try again.","details":{"responseAction":"","detailedDescription":"","additionalErrors":[],"additionalInfo":{}}

Have tried many passwords. There are NO invalid characters in the passwords I am using.

Any help you are able to provide is greatly appreciated.