If you are looking to manage your account info, please have a look at this article:
Access Settings on the Web
Sign in to pasteapp.com on a desktop or laptop browser
In the top-left corner corner of the home screen, you can access various settings for your Paste® team:
Brand
From the Brand settings, you can:
Add a custom Logo & Watermark to your slides
Set custom team colors that can be used across all of your slides
Add custom fonts for all of your decks
Members
From the Members settings, you can:
Invite new team members to your Paste team
Set a team domain which will allow anybody on that domain to join your Paste team automatically
Manage your current team members (only possible as a Team Admin)
Billing
If you're using the free service, this will be called Upgrade instead. From the Billing settings, you can:
View your current plan and update the payment method used for your Paste Pro subscription.
Upgrade your team to a different Paste Pro subscription