Ah yes, this was it Thanks again. Finally I use this snippet including the HD-wallet-address-issue in order to use MyCrypto-App for managing funds and token:
ropsten: {
provider: () => new HDWalletProvider(
process.env.DEV_MNEMONIC, "https://ropsten.infura.io/v3/" + infuraProjectId, 0, 10,
true, "m/44'/1'/0'/0/"
),
network_id: 3, // Ropsten's id
gas: 6000000,
gasPrice: 5e9,
},
It gives me 10 addresses.