Hi @Dipyaman
There could be two possibilities:
- You were enrolled onto the course under the 7 days free trial option and it is now expired. If this is the case, you need to enrol to the full pay option to gain access to the assignments.
- The system experienced a hiccup. If you logout and logon again, it would normally solve the problem. You may also like to try a different browser to see if it helps.