For me it's very strange: I'd say about 7 times out of 10 it loads the checkbox for five to ten seconds, then I check it, then it loads for another five to ten

For me it's very strange: I'd say about 7 times out of 10 it loads the checkbox for five to ten seconds, then I check it, then it loads for another five to ten seconds, refreshes the page, shows me a second checkbox, we go through the whole song and dance again, and then it lets me in.