I bought against a confirmed fixture arrangement for lightweight housings. The UR5e arrived with a different suffix and tool interface, though the seller calls it equivalent. Twenty-two days on, my inspection-position bracket is still unfitted. I need a decision I can actually use, not another reassurance.
Ask for two concrete answers: a documented comparison for the delivered interface, and whether they can supply the confirmed configuration. Which choice would leave you owning a bracket redesign?
They have now offered to send a revised bracket drawing, but not to take responsibility for its design. I have declined that proposal for now; it leaves the uncertainty with me rather than resolving it.