My name is ***** ***** certified professional with over 10 years experience. I will be glad to assist you with this.
I am sorry to hear that you are having this issue.
Let me know if this does not work and we can try another solution.
Please follow these steps>
Scroll down to the bottom of the page and tap Reset.
Tap Reset Network Settings.
You will get a prompt warning you that this option will delete all network settings and return them to factory default settings. Tap Reset to continue.
Wait while your iPhone resets its network settings.
Once the reset process is done, only your network settings will return to its factory default settings. Your iPhone will also automatically restart. Then try connecting to wifi again.
Please reply and let me know if you need any other assistance or if everything is good, take a moment to rate my service by choosing one of the stars at the top, then click submit.
Thank you very much!