Wyre and Transak are on-ramp third-party solutions integrated inside the MetaMask wallet.
If you would like to increase the weekly purchase limit, please contact Wyre or Transak directly.
You can email Wyre at support@sendwyre.com / https://wyre-support.zendesk.com/hc/en-us/requests/new and for Transak please use support@transak.com