The tender that you are interested in could be hosted on a different platform on their website - In addition to listing TenderBoard-exclusive tenders, TenderBoard also aggregates tenders from many different websites across Singapore.
If there is no additional information in the deal you are viewing on TenderBoard, it is an Open Tender from one of over 30 sites that TenderBoard aggregates from daily.
To participate in this tender, go to the listing that you found in TenderBoard, and click on the 'Link to Original Site' button (in the top right-hand corner), you can follow the instructions on the external website for submission, or refer to our tutorial on doing so if you are a registered TenderBoard user.
If you have a paid account on TenderBoard, you can view our tutorial on how to register yourself on other sites. For further assistance, you will need to contact the respective host-site's support contact.