I am afraid
a non-specific ST and T wave abnormality
is meaningless in medical terms. Bit like 'the engine sounds funny'
So you will not get any sensible advice and, frustrating though it is, it is necessary to await the verdict.
I would however just check the leads were on correctly - there are numerous incidents of leads being put on back to front leading to disqualifications. So if you are failed just ask for a repeat ECG first with the cardiologist or cardiology technician......