Every time I proceed to the checkout and buy Uplay+ it gives me 404 error, and now you just lose days its been like this since yesterday and I'm still charged 1 euro every time, you should not be charged anything for a fecking free trial not even for "test". Learn from other companies that does it better. Fix your ****, very nice first impression of the services you are going to offer with Uplay+ nice on.
I experienced that too after entering my (expired) card details. Entered my valid card details instead, and it was fine.
Maybe the 404 got something to do with the way they (don't) handle "unexpected issues", which may also explain why $1 got charged.
It's a new service, sadly it's the case these days that new things take time in production to have their bugs ironed out.
It's broken! and here is why we get charged:
"We ask for a payment method to prevent interruption of service after the free trial. We do this by sending an authorisation request to your financial institution, to verify that your payment method works. These requests are not charges, but in some cases they may temporarily affect your available account balance** "
" **Please note that due to the 3D-Secure process you might receive a text message asking you to authenticate your purchase for £1. Rest assured, the billing and charge will remain £0 during the full length of the free trial which ends on September 30th."