Thank you, then I will try to use PureVPN or Nord

yessss thats right,, better on first try do not immediately buy it, and make sure if it is later does not work, if it can be refunded or not. lest you lose after buy

the modem's only two months, there must be a guarantee, try to take it again just to counter immediately, as long as the warranty is still there, it would have repaired or replaced with new ones