I would STOP using that nearly 4-year old Safari web browser, as it is, probably, not safe and secure to use any longer, and seek out a third party web browser that is STILL currently being updated and STILL being supported on iOS 9.3.5.
Here are a few third party web browsers that I am pretty sure are STILL being updated and supported on iOS 9.
Available and more popular third party Web browser choices are completely GONE, now!
There are still a handful of iOS 9 and earlier supported third party Web browsers.
Some of these have had recent updates, too!
Here’s what’s left.
iCab Mobile Web browser
Aloha Web browser
ALook Web browwer
Dolphin Web browser
DuckDuckGo Private Web browser
Snow Bunny Web browser
Maxthon Web browser
Private Browsing Web browser by Savvy Soda
Private Browser Deluxe
TOR browser anonymous
Turbo VPN browser
TOR + VPN web browser private
Pick two to download and install that have had the most recent of app updates. Do not pick any third party Web browser that has NOT had an app update in a year, or more!
Good Luck to You!