@MusicFan90768 It sounds like you may have an unauthorized user on your account who deleted your stations.
I took a look at your account and can see all of your collected stations were recently deleted.
To resolve this, I've gone ahead and restored those stations back to your collection for you.
In the meantime, I will also take some measures to help secure your account to prevent this from happening again in the future.
I've gone ahead and removed all the devices associated with your Pandora account. This will automatically sign you out everywhere including any devices you currently have, so you will need to sign back in once this change takes effect. Please be patient as this may not happen instantaneously.
You will now need to change your password to something new as well.