No CAA record on vega4.net (wildcard=false) contains the issuance domain "letsencrypt.org". You must either add an additional record to include "letsencrypt.org" or remove every existing CAA record. A list of the CAA records are provided in the details.
vega4.net. 0 IN CAA 0 issue "letsencrpy.org"
CAA records control authorization for certificate authorities to issue certificates for a domain
vega4.net. 0 IN CAA 0 issue "letsencrpy.org"
A and AAAA records found for this domain
vega4.net. 0 IN A 46.23.92.205
vega4.net. 0 IN AAAA 2a03:6000:6f74:602::205
The IANA public suffix is the TLD of the Registered Domain
The TLD for vega4.net is: net
The current status.io status for Let's Encrypt
Operational