Kobo aura problem need help

[billthrow]

Hi Kobo people: I have a Kobo reader serial number +236770563819,bought Mar 11 which refused to connect to the computer or my Wi-Fi. It was working until the last upgrade version 4.9.11311. I I I Reset it and it still would not connect to the computer or my Wi-Fi. I tried upgrading it two or three times and it finally connect to the computer and I downloaded my books again. I live in an apartment complex where everyone has Wi-Fi. On this reader my Wi-Fi shows a weak signal and will not connect when I enter the password. WPS there's not function on my router. my neighbor's Wi-Fi all show stronger on my Kobo reader but actually my signal is stronger At -37dBn (Strogest neighbor is minus -39 dbm and shows are strong fan on my reader. the reader will connect to the Kobo store without any problem and upgrades automatically over Wi-Fi. is there any cure for this problem?