App specific password for Spark and iCloud Solution
Hi I stumbled upon the problem of not being able to generate an App Specific password for my iCloud email on the spark email client.
The solution was
Set Google chrome as your default browser
Verify you are using the @iCloud or @me account not the account you use to login in to your iCloud account
When you receive the app specific password, manually type it in, do not copy and paste it.
MacBook Pro 13″, macOS 12.5