Stay clear of Webcomics app
In 2023, a lot of creators were burned when the platform wouldn't pay them or answer their emails.
You can read more about what happened in this twitter thread.
The platform used to hire salespeople and call them "editors." Their job was to mass-DM or mass-email creators to get them to sign up for the app, just so the salespeople could get paid themselves.
And as DrizDew said, you can't remove your own work after uploading there.
Like me! 
My series is still up there despite me sending multiple emails telling the platform to take it down.
This will give you a headache if Webtoon or Tapas approaches you, wanting your series to become their Originals.
I heard if you email Webcomics threatening legal action, only then they may take it down.
But ooph, it's definitely not good.