Go ahead with the repair and the 30% comes off your whole bill: labor, parts and the $99 visit, before tax. You see the itemized quote and approve the total before any work starts.
Covered labour has a 90-day warranty from the documented completion date, under the service terms. Keep your invoice or service record.
If the same symptom returns and appears connected to the workmanship, contact Fixentra during the warranty period. An inspection may be needed to determine coverage.
Parts have their own stated terms. A new or unrelated failure is not automatically covered by the labour warranty. The full policy explains conditions and exclusions.