Heads Up :
The post you are writing will appear in a public forum. Please ensure all content is appropriate for public consumption. Review the employee guidelines for the community here.
I'm not the most experienced ASA admin, but there are a few things you'll need to provide to get help.
Is there anything in the debug logs during authentication?
Are you using 'Tunnel All' or Split?
You'll probably want to provide ASA and Anyconnect ...