For folks having problems with Sagrada Familia tickets…
For folks posting in Sept 2022 about Sagrada Familia Tickets error: I had all the same problems in May 2023 and tried every solution out there- (different card, different email, different browser, wait a few days, update browser, restart device, clear cache, etc) What ended up working for me was installing a VPN that works in Europe. Sounds scary but was remarkably easy. I used ExpressVPN. It can be found in the App Store and there is a free trial. I suspect other VPNs would work equally well. Install the VPN, reload the Sagrada Familia Website, presto - all went through no problem. Good luck!