CT issues with older ipad??

odd one?....
im a bit sceptical about the effect of the latest CT 'updates' on my ipad, which im 'blaming' by process of elimination..
a few days ago, around 10 in the morning, my ipad suddenly went blank and rebooted itself....rare, but not unheard of.....I was using CT at the time...
it rebooted but a few mins later, did the same...the issue got so bad that it was just in a continual loop of crashing and rebooting, most unusual for an apple product.
i tried a series of different reboots and resets....firstly resetting "all settings" but this made no real difference...
i had a few back ups so decided to reset to factory settings....went ok...then restored from a back up a few days prior to the issue...hopefully ensuring that any bug in my most recent backup would not be reimported.
all went ok and again started using it...
a pattern soon developed....opening mail was ok....opening other various websites in safari was also ok....and (i think) opening CT but without signing in or clicking yes to cookies 'seems' ok...
if i wish to post, i have to sign in and, even without accepting cookies, the ipad will then crash after a few mins....
im typing this post in Notes (as the ipad may well have crashed prior to posting) and will try and past shortly...
i am aware i have a older ipad and am running on IOS 9.3.6 and there certainly are other websites that sometimes dont display properly...
my iphone is on version 14.6 and, although much less used for CT, ive had no issue.
i doubt anyone has such an old ipad, but if they do, have they had any such issues.
im probably going to replace this unit but it has been working fine as a browsing tool.
i dont use apple for any 'computing' tasks as i used to on the PC...
Thanks for any help....

ps....i deliberately havent opened CT for the past 90 mins or somand the ipad has been stable using google maps, mail, notes, other websites etc....
i will now open CT and try and post this....