If you are using SIM card other than the one you received together with your device - you will need to enter APN address. You should be able to get it from the GSM operator that the SIM card belongs to. However, if you are trying to use a pre-paid SIM card and it is empty - you will most likely not be able to pair Monimoto with your phone until you put money into you SIM card.
If you are using Monimoto SIM card and got asked for the APN settings - enter m2m.tele2.com
Password is not required. This APN is a default parameter that comes from the factory.
Note: Paired device remembers APN until you unpair it from your phone or reset it to its default parameters. Even if you do the reset, the default APN parameter is still m2m.tele2.com