Okay - Leave it for now if you've watered 5 times with 7.1.
If there's no change, i can only imagine the PH readings are inaccurate. The only way to really know is with a calibrated digital PH meter - some people use an Accurate8 soil probe which are supposed to give accurate readings, but i've personally never used one.
Wait for them to dry a little and hopefully the raised PH feeds will work their magic and raise the soil PH for you. A lot of people consider the digital PH meter one of the most important things!
Not sure what i can do now, it will take 3 days to get a new PH meter