Esso Gift Card redemptions are indefinitely suspended for technical reasons
Gas station attendants in Vancouver had no idea what was going on.
If you have an old-school Esso Extras card, they will compensate you up to $20 in points if you express significant difficulty and push them. There is no compensation otherwise. They will typically not escalate to a supervisor if you ask.
You can call Esso at 1-866-527-2677. Unfortunately, in my experience, agents kept transferring me to other business lines (one time they did it mid-sentence).