Hi,
1. Are you the system administrator for Dynamics 365?
2. Does this issue happen with all the Agreements?
3. Have you cleaned the web browser cache and try again?
4.. Do you use Dynamics 365 Online or Dynamics 365 On-premises?
If you are using Dynamics 365 On-premises, you could try to restart CRM DB , application and async server .
Once restart server go to application server and restart all Dynamics 365 related services by going to Windows services using services.msc.
Also restart the Microsoft SQL server services in your database server.
Clear all cache , cookie from server.
Hope it makes sense.
BR,
Judy