That is pretty much can do with Starter License:

• Numbers of users: individuals or companies up to 1 employees.
• Personal use (no financial gain): unlimited.
• Internal projects: Use in internal presentations, client pitches, and project proposals.
• Showcase designs on personal websites, portfolios, or self-promotional materials (excluding e-commerce platforms).
• Showcase designs on up to 5 personal or professional social media accounts, as long as these are organic, unpaid posts.

That is pretty much can do with Standard License:

• Number of users: individuals or companies up to 2-5 employees.
• Personal use: unlimited
• Internal projects: Use in internal presentations, client pitches, and project proposals.
• 5 commercial project use: Mockups can only be used within five defined commercial projects or campaigns.
• Showcase designs on personal websites, portfolios, or self-promotional materials (including e-commerce platforms).
• Showcase designs on up to 5 personal or professional social media accounts, as long as these are organic, unpaid posts
• End product for sale: up to 5,000 promotional materials.
• Paid advertising campaigns: unlimited paid advertising campaigns
  
  

Severals things you cannot do:

• Sharing editable mockup files with clients. 
• commercial project use more than 5 project
• social media accounts more than 5 account
• End product for sale of more than 5,000 items. 
• Use by companies with more than 5 employees.

That is pretty much can do with Extended License:

• Number of users: individuals or companies up to 5-50 employees.
• Personal use: unlimited.
• Internal projects: Use in internal presentations, client pitches, and project proposals.
• 5 commercial project use: Mockups can only be used within five defined commercial projects or campaigns.
• Showcase designs on up to 5 personal or professional social media accounts, as long as these are organic, unpaid posts.
• Showcase designs on personal websites, portfolios, or self-promotional materials (including e-commerce platforms).
• End product for sale: up to unlimited promotional materials.
• Paid advertising campaigns: unlimited paid advertising campaigns.
  

Severals things you cannot do:

• Sharing editable mockup files with clients. 
• commercial project use more than 5 project
• Reselling or redistributing mockup files in their original form. 
• Use by companies with more than 50 employees.