That link will only work if you have a bitcoin wallet app installed on your phone. Most wallet apps support external applications opening the links. If you have one which doesn't work, you may need to copy the destination invoice link and pay from your wallet. If you do not have a wallet app that you could use on your phone, we've listed below a collection of popular wallets, that you could consider.
- Cryptopay wallet
- BitPay Wallet
- Copay Wallet
- BTC.com Wallet
- Mycelium Wallet
- Edge Wallet (Formerly Airbitz)
- Electrum Wallet
- Bitcoin Core Wallet
- Bitcoin.com Wallet
- BRD Wallet (breadwallet)