YouHodler can't process a crypto withdrawal transaction of XLM, DOT, XRP, EOS, and XTZ to an external non-activated wallet. Here is an example of a non-activated XLM wallet:
If you withdraw XLM, DOT, XRP, EOS, and XTZ from YouHodler please make sure your external wallet is activated i.e. has a history of transactions.
Here are a few examples of how wallets can be activated.