Hi @Alexandre_Pana and @Haowen_You, sorry to hear about this trouble. Checking with the team, they haven’t detected any bug impacting access to the timeline view yet.
Would you be able to contact our Support team about this issue and share the project IDs/screenshot with them? They have access to tools and information not available to me here in the Forum, so they will be able to further investigate this for you. Thank you!