Confirmed - cause found, patch not written yet.

'Nexon Game Card' survives in the Thanksgiving twin of the Mom-and-Dad chain. The earlier VX Prepaid rename only covered the Mr. Spot copy.

Moving it out of OPEN so the list reflects reality: this one is pinned down to exact files and lines, so what is left is writing and testing the change, not working out what is wrong.

Fixed in a9a1019f.

Cause: v83 ships this chain TWICE, with two different card items, and the earlier rename only caught one of them. Straight out of the binary v83 String.wz:

4031530 'Nexon Prepaid - 100 points' Mr. Spot, quests 8869/8870
4031865 'Nexon Game Card - 100 points' the Thanksgiving twin, quest 4963, plus the 20 'Game On!' store vendors

The earlier pass renamed the first family by replacing the literal text 'Nexon Prepaid'. It was never scoped to the quest ids - it simply never saw the other phrase. So 'Nexon Game Card' survived intact in the Dinner Fixins dialogue you screenshotted, in the 20 vendor quests' text, in both item names, and in three item descriptions: 147 places the first replace could not reach.

They do NOT both become 'VX Prepaid'. These are two genuinely different v83 items, and giving them one name would put two indistinguishable ETC entries in your bag. The second family takes 'Verse8 Game Card', which was already the shipped wording for the same chain's store-vendor NPCs.

Retest: run the Mom and Dad chain past Mr. Spot and check every line.