We have had 2 failed ICSI cycles. Can you shed any light as to what may have happened?

I am 38, but responded well to meds. 17 eggs out. 12 mature, 11 fertilised, 7 made it to 5 day blast.

We had 2 fresh embryos and 2 frozen embryos put back.

Husband sperm report: 1% normal motility. Aestheozoospermia. 58m count. Total motility 35%, progressively motile 24%

Do you think our embryos are failing due to the poor sperm quality as opposed to my eggs?

Also, is there any point continuing to put the remaining 3 frozen embryos in (as they've already been fertilised) or tryvsnd improve his sperm be start again with a new collection?

Thanks in advance