Hi, my skyQ box keeps disconnecting from wifi?

[Pinkynan]

Hi all, i have recently upgraded to fibre 145 from plusnet and ever since then my sky Q box keeps disconnecting from wifi, it was fine for 2 days now it will not keep connected to wifi so i had engineer out to wifi and no problems were found there, also my mobile phone has never dropped out nor my laptop they are fine it is just the sky Q box. I put password back in on sky box and lasts for 2 mins then it has gone again it is driving me mad because i cannot watch my mini box in bedroom without the main sky Q box? Any help would be appriciated.