No WIFI to house extension

[Noodles10]

Hi, old house, thick walls. Office Extension on side of house has never had WiFi. Used plug in BT extenders that have worked 90% of time to use my laptop. 
Added two WiFi cameras to outside of property & bought a decent tp-link booster to enable WiFi to outside of property. Since then my BT extenders just won't receive data/wifi even after reinstalling. 
any ideas anyone? Desperately need a solution for my office extension as I work in here & need my laptop for private meetings 😕 I could do with someone coming out, do these people actually exist? Thank you 

[jamesn123]

@Noodles10 

Nobody from Sky would come out to help with this kind of job, it just does not all under their jobs list. 

If you disconnect the cameras & TP-Link WiFi device do your extenders start working again?