Under no circumstances should you ever be giving out your Stripe login details. Just add them on as a developer! This will give them the tools to integrate the account with your website!
Keep in mind that unfortunately Stripe will not restrict sales data from the developer as this is may be a required element when integrating your website it cannot withhold that.
Login to Stripe Dashboard
Click Settings
Go to Team & Security
Click “New Member”
Tick Developer & Type in their Email Address
