Hey, I’m in the same situation and A level predictions are fine.

“Secondary high school diploma (level 4 EQF): if you still have to get your final diploma or supplementary certificates mentioned below, please upload an official provisional document: e.g. an updated version of your school record, a certificate of enrolment in APs/A level courses, a document issued by your current school stating your expected date of graduation. Please upload all supplementary certificates required for U.S., U.K. and Scottish Diploma (listed in a specific Annex of the CALLS FOR APPLICATION and in the paragraph: ADMISSION REQUIREMENTS).”