Castpod Yarn and Sury APT keys issues

What app is this about, and its version: Castopod 1.15.4~ynh1
What YunoHost version are you running: YunoHost 12.1.39
What type of hardware are you using: Old laptop or computer

Describe your issue

I’m trying to upgrade Castopod and I run into the issue detailed here… Yarn and Sury APT keys issues.

Doing this enables me to restore from backup and get back to where I started but unable to update.

Is there a way I can update Castopod? I previously updated the PGP keys for Sury (with the help of a friend who understands this stuff) but the problem seems to persist going forward.

Share relevant logs or error messages

https://paste.yunohost.org/raw/ujuqupezox

It seems to be a connectivity issue. What do return

ping packages.sury.org
ping 9.9.9.9

I get…

64 bytes from IP Address (IP Address): icmp_seq=13472 ttl=59 time=20.6 ms and when exiting 14 packets transmitted, 14 received, 0% packet loss, time 13019ms
rtt min/avg/max/mdev = 3.963/5.277/6.992/0.648 ms

Did you try apt update && apt upgrade ?
I know this sounds obvious…