I see the account you used to post for help is free. Our system let me know you have two Lightroom accounts, and your other account is subscribed. I will send more info in a direct message to protect your privacy.
Once you sign into the subscribed account, please look at the app Settings > Premium features to see the premium features that come with your Lightroom Mobile subscription.
Also, I see your post tagged MacOS and Windows. Your Lightroom Mobile Premium subscription works on iOS and Android, and any web browser at https://lightroom.adobe.com. Mac and Windows apps are not supported with your Mobile Premium subscription.
I tried a fresh translation of your original question into English. If you are asking about the specific Lightroom feature "Recommended Presets," this is not currently available to paid users in Mainland China (PRC) because that region does not sync to Lightroom cloud storage.
For details about which Lightroom Premium features are available in your region, please open Lightroom Mobile's app Settings > Premium Features