You have a connectivity problem, not a Pi-hole problem.
1. *** [ DIAGNOSING ]: Operating system
2. [i] dig return code: 9
3. [i] dig response: ;; connection timed out; no servers could be reached
*** [ DIAGNOSING ]: Name resolution (IPv4) using a random blocked domain and a known ad-serving domain
[✓] nysun.com.112.2o7.net is 0.0.0.0 via localhost (127.0.0.1)
[✓] nysun.com.112.2o7.net is 0.0.0.0 via Pi-hole (10.0.1.26)
[✗] Failed to resolve doubleclick.com via a remote, public DNS server (22.214.171.124)