Chloe,
all I remember is it started with a C...please help
How does
Carmona microphylla sound? That is the proper binomial name for Fukien Tea, (Or at least one of them, the other is
Ehretia buxifolia, I'm not sure which is currently preferred.

) it may help with your research. I agree that your tree is a Fukien Tea. A close look at the enlarged pictures shows the characteristic 'notched' leaves.
The top photo appears to show some distress as bonsaiboy noted but I could not say what the problem is. How are you managing it? Lighting and watering. Look here for a care sheet that may help.
https://www.bonsai4me.com/SpeciesGuide/Carmona.html
Norm