try to log with alpha browser, and disconnect your computer from internet, wait till this window apear

ty to crop the upper left corner with snipingtool like that

then resize it using paint

till you get something like that

now you just need to convert it to bmp, if it shows the .png you just try to rename and put reconnect.bmp as name
if not, there is so many ways:
rename it from your android
try to edite with notepad++ and go to file>save a copy...> choose a weird file type then remove the .xxx and put .bmp
and the last way, google a converter and use it x)
now you just need to replace the actual one with the new one and launch the bot
this way the bot will search for the same pixels shown on the screen
hope it to work