From Internet.nl

Route Origin Authorisation existenceclose
Verdict:
For at least one of the IP addresses of your name servers no RPKI Route Origin Authorisation (ROA) is published.

Technical details:
Name server IP address RPKI Route Origin Authorization
ns10.dynu.com. 176.56.237.121 yes
... 2a00:d880:5:ce7::8888 yes
ns11.dynu.com. 172.104.238.151 yes
... 2a01:7e01::f03c:92ff:fe16:814c yes
ns12.dynu.com. 139.162.195.230 no
... 2a01:7e00::f03c:91ff:fedd:6af1 yes
ns1.dynu.com. 162.216.242.2 no

Route announcement validityclose
Verdict:
At least one IP address of your name servers has a NotFound validation state. There is no RPKI Route Origin Authorisation (ROA) is published for its route announcement.

Technical details:
Name server BGP Route Prefix BGP Route Origin ASN RPKI Origin Validation state
ns10.dynu.com. 176.56.224.0/20 AS198203 valid
... 2a00:d880::/32 AS198203 valid
ns11.dynu.com. 172.104.224.0/19 AS63949 valid
... 2a01:7e01::/32 AS63949 valid
ns12.dynu.com. 139.162.192.0/19 AS63949 not-found
... 2a01:7e00::/32 AS63949 valid
ns1.dynu.com. 162.216.242.0/24 AS398043 not-found

Is that problem?