Hi Maasto,
1. After a double check, the contract between you and us is signed in March 2019, so it’s still valid. In your case, it shall be liable for breach of contract for suspending your account on our site.
2. Actually, you just need to make sure that your tracks on our site are China-exclusive. That is, your tracks that uploaded on 100Audio can’t be uploaded to other Chinese sites.
BTW, many authors have made a big profit on our site. And you have earned and made a good start here as well.
Hope you have fun selling on 100Audio!