Hosted Checkout lets you select from the currencies and networks NOWPayments currently offers for that invoice. Availability and minimums may differ. Read the exact asset and network labels before confirming a transfer in your wallet.
For an existing Direct Crypto Payment, use the network already selected on that payment. Changing a network requires a separate payment attempt; the old address is not a universal deposit address.
The same token name on two networks does not make the addresses or deposits interchangeable. If you are unsure, contact G2U Support before sending. Do not send a second transfer to correct a mistake until support has checked the first.