Is it possible to switch from a solo membership to a family membership or vice versa?

To switch to a family/solo membership:

• Go to your profile by clicking on the icon
• Click on "Subscription and purchase    
• Click on SOLO or FAMILY             
• Click on "Subscribe" below

After validating the option, your subscription will automatically switch. In family subscription, you can then create as many profiles as you want with 4 screens shared at the same time.