Monitoring mails with unclickable links on Android

Hello ! When I receive monitoring or supervision emails from a PunBB forum, I cannot click on the links to visit the followed threads on my Android phone. They are plain text on the phone, while they are displayed as  a real clickable link on my computer.

The problem is only with mails from a PunBB forum. For mails from other forums or mails with any link, the links can be clicked, they are not plain text.

Maybe it is the way PunBB supervision mails are built.

Do you have any idea about solving this problem ? Does anybody else meets the issue ?

Thanks for any answer.