Please note: some features may only be available to residents of certain countries. 
You can check the full list of services supported by country via the following page:  
Supported Countries   

Transaction speed depends on both the blockchain's and Wirex's current network load. As a rule, transactions get completed within 15 minutes.
However, this may take longer during times of exceptionally high load. 

If you used your local credit or debit card or Wirex card to purchase or exchange crypto, this can also take up to 15 minutes to appear in your balance if the system load is high.