No Results on NIPT twice! Help pls

Help please My NIPT (Harmony test) has come back twice with "no results" from KKH. The tests were done on 10w5d and 13w4d. We are just so frustrated as we have been waiting so long to know whether everything is ok. The reason given is "quality error". Im not even sure what it means. The next step is amnio and we are not comfortable in doing that. FTS ultrasound shows all is well but the blood test shows high risk. Is there anywhere in Singapore where I can do NIPT test privately? Perhaps a lab or private clinic or something. Appreciate any advise. Thank you.