As you may already know, we have no control over the different Cardano wallets, and how their interfaces show Cardano Native Tokens.
The reason you have received ~1.5 ADA is because it is a requirement of Cardano Native Tokens, but we decided not to bother you with those details. The extra ADA is on us.
Some wallets, such as Daedalus, don't visualise the amount correctly until you set the correct amount of decimal places. WMTs have 6 decimal places.
Some other wallets, such as Yoroi or AdaLite, don't show you the tokens in their main dashboard. But you can see them by going into the transaction details (the one with ~1.5ADA), or when you go into the "send" section, where you can click a dropdown to select the different tokens that you have, the default one being ADA.
All of this is not within our control, the UI of each of the wallets will be evolving as they improve their support for Cardano Native Tokens.
If you would like to open a ticket please email support@worldmobiletoken.com