I had 5 app reject Rejection Reasons: Other They were there for over 10 days. I checked my account and I have no activity. I contacted "Apple Developer" but nothing happened for a 10 days. any other way can help?

my Chinese Chess Game be rejected 2 times. the reason: We continued to notice that your app provides the same feature set as other apps submitted to the App Store; it simply varies in content or language, which is considered a form of spam. What I'm more curious about is where is the measurement standard for this sentence? According to this reply "same feature set as other apps ", should APPLE STORE have only one chess games, and the others are considered spam? but why there are so many Chess game there? do they have different features? based on that reply, I think, I am not a chess player. or I am not playing IOS chess game. my APP should be the strongest AI already. have Large End Game Database for play. have self define board for play With AI. any suggestion of make different features set?