I can confirm the issue with my Chinese version of the Vivo x200 Pro, which I use in Santiago, Chile. I removed the Google Play Services updates and was able to use Google Wallet again. I'm currently running a version of Google Play Services earlier than 26.28. I hope Vivo develops a solution soon.
Google has apparently blocked all imported or China-purchased smartphones from using Google Wallet for contactless payments with the latest version of its Play Services, as countless affected users of Xiaomi, Vivo, Oppo, and OnePlus smartphones are criticizing at the moment.