Adobe Express - Colleague received invite to project but cannot access it

Apologies in advance if I am missing something obvious - I have shared a link to a project in adobe express with two colleagues in the same team as me. One staff member who did not have an adobe account received the link and was able to join the project. My other colleague set up an adobe account yesterday, they also received the link but says they need to request access or switch accounts. However, the email is the same as their account and there doesn't appear to be an obvious way to request access. On my share page I can see one colleague has access and the other colleague is in a status of 'pending' but there is no way to approve as I've seen on other screenshots? Does anyone know how I could fix this? Thanks!