[README]: Update the GitHub Issue policy at README.md (#3757)

README.md

@@ -123,7 +123,8 @@ There are a few community-maintained projects that extend Wallet Core to some ad
 
 # Contributing
 
-The best way to submit feedback and report bugs is to [open a GitHub issue](https://github.com/trustwallet/wallet-core/issues/new).
+The best way to submit feedback and report bugs related to WalletCore is to [open a GitHub issue](https://github.com/trustwallet/wallet-core/issues/new).
+If the bug is not related to WalletCore but to the TrustWallet app, please [create a Customer Support ticket](https://support.trustwallet.com/en/support/tickets/new).
 If you want to contribute code please see [Contributing](https://developer.trustwallet.com/wallet-core/contributing).
 If you want to add support for a new blockchain also see [Adding Support for a New Blockchain](https://developer.trustwallet.com/wallet-core/newblockchain), make sure you have read the [requirements](https://developer.trustwallet.com/wallet-core/newblockchain#requirements) section.