Advice needed with Admission and Foreign Transcripts. TESU.

[portia8]

Hi! I'm not sure how all of this works but I was recommended to do a TESU degree by my uncle when I informed him I wished to do a fully online degree in a relatively short amount of time. I want to know if I would be considered from admission at TESU for  Bachelors of History with my foreign transcripts. I did my exams with Cambridge through a combination of A Levels and IGCSE in South Africa but you aren't awarded a 'highschool diploma,' you're awarded the certificates per subject that you take. Any advice on how I should proceed to apply and any tips on the TESU history degree through study.com/Sophia courses would be greatly appreciated.
(My grades in IGCSE and A Levels for context:                                  IGCSE: Spanish, A, 89%. English, A, 83%, History, A, 88. Maths, D, 58%, Biology, D, 58%.                                                                              A levels: History , A, 89%. English, B, 73%.)
Any advice at all of admissions and such would be greatly appreciated, I really have no idea what I'm doing but would really like to get stuck into my degree in the new year as I am 20 and am anxious to get started! Thank you very much in advance!