Unfortunately Tapatalk doesn't currently support this version of the forum software causing errors. For a number of reasons Tapatalk support is limited, and we'd advise people to use the normal web version which has a responsive theme that works absolutely fine on mobile devices.
The forum now also supports Push Notifications, which you can enable in your account preferences or from the popup that will show on supported devices.
Most devices and browsers are supported for Push alerts, but due to Apples restrictions, not currently Safari on MacOS or iOS devices. We hope support for these devices will be allowed soon.
You can also get a similar view to the 'Participated' view using the Your Content option in your account panel: