Hi there and welcome
No that's not correct with the IP, the router gives out the IP's and it will only give out unused ones.
If the issue is with your Nephew moving in then it is possible he is taking up all the bandwidth with mass downloading of games, movies ect.
If you switch all his equipment off, do you still have the issue?
Has he restarted the Acer? By holding the power and choosing power off?
And please note, internal bandwidth is different to your internet speed.
No problem, the tablet might even need a factory reset as it can be the firmware at fault.
I will mark this question to remain open so no time limit on this.
If you have any issues would like any additional information or assistance, please do not hesitate to let me know.
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