Hi Lubos28189533mxby ,
Sorry about the delay in getting back to you.
The template can be shared only with users under the same account. This feature is only available with the Acrobat Sign team and Enterprise plans.
We checked that you have an Acrobat Sign individual service plan. Your Acrobat Sign account is not part of the organization account, which is an Acrobat Sign Team or Entperise account. With your current plan, it is not possible to share the template. Also, the recipient should be part of that account.
Users with individual service plans cannot share a template from within their accounts with other account users. If you wish to share the template, you need to manually download the template file as a PDF and share it with others.
For more information, refer to the following help document: https://helpx.adobe.com/sign/adv-user/library-templates/create-template.html.
Feel free to let us know if you have any questions.
Thanks,
Meenakshi