Hello TIJU VARGHESE CHACKO,
Good morning Thank you for posting in the Microsoft Community, we'll be happy to help. To help us narrow down the issue you are facing may I know if you could see the apps before with the same subscription or this issue started when you switched to Business Basic plan. You can also share a screenshot for more details.
We look forward to your response. Thank you for your cooperation. Best regards,Microsoft Community Moderator