Apex domains cannot have CNAME records.
Question and response
Question
dig quotientapp.com. NS
Answer
quotientapp.com. 3 NS ns-1604.awsdns-08.co.uk.
quotientapp.com. 3 NS ns-652.awsdns-17.net.
quotientapp.com. 3 NS ns-402.awsdns-50.com.
quotientapp.com. 3 NS ns-1283.awsdns-32.org.
Authority
The response has no authority records.
Additional
ns-652.awsdns-17.net. 3 A 205.251.194.140
ns-1283.awsdns-32.org. 3 A 205.251.197.3
ns-1604.awsdns-08.co.uk. 3 A 205.251.198.68
ns-402.awsdns-50.com. 3 AAAA 2600:9000:5301:9200:0:0:0:1
ns-652.awsdns-17.net. 3 AAAA 2600:9000:5302:8c00:0:0:0:1
ns-1283.awsdns-32.org. 3 AAAA 2600:9000:5305:300:0:0:0:1
ns-1604.awsdns-08.co.uk. 3 AAAA 2600:9000:5306:4400:0:0:0:1
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0