No. Adobe Sign online technical support is reserved for customers with an active Adobe Sign subscription. Only paying customers with an active subscription can avail the online technical support.
Non-paying users, such as trial users and developers can use the Adobe Sign forum to seek support from the Adobe Sign community.
If you have a Pre-Sales account executive assigned, you may also contact them for further assistance.
If you have an active subscription, login to your Adobe Sign account and click on the Get help question mark icon at the top-right corner of your screen. It indicates the assisted support options that you are subscribed to and are available to you.