You will find that Phoenix Contact relays are widely available, so getting replacements does not turn into a long wait.
10PCS/New in Box PHOENIX CONTACT 2967060 PLC-RSC -24DC/21-21 Relay Module
A nice touch is that Phoenix Contact often includes helpful labeling, which can simplify troubleshooting when seems off.
With Phoenix Contact, there is a sense that every small detail has been considered for practical use in the field.