i have just set up a Tp link smart plug, dont know if ive done this right, the only way to get the plug to work is go to wifi settings ,select network, i select tp link plug 975, then i can connect and work it but now i cant use my other smart devices because iv disconnect my router ,(using iphone with kasa  app),if i go back to wifi setting,choose network then choose my router my other devices work ,tp link plug does not work, dont have this problem with my other smart plugs they just joined router wifi, not seperate,if that makes any sense, dont know if ive explained my problem well ,any help appreciated,thanks.