New to eBay. Downloaded latest .NET 4 Trading API zip with wsdl supporting Version 1131 which appears to already be deprecated in February 2021. Using https://developer.ebay.com/webservices/1149/ebaysvc.wsdl and later version #s returns not found error. How do I get updated wsdl files? Is Trading API considered legacy? Should I start with REST APIs instead? Are people creating their own libraries to access API instead of using official eBay SDK which doesn't appear to be updated regularly? Looking for links or guidance. Thanks.