Purchased tender from plunderstorm, went on retail characters, checked to see if I had any tender in the collector’s cache in Dornogal and Stormwind, and I had none. I checked in Orgrimmar on my horde character, and I had none. I made a support ticket and got an AI response replying to me about plunderstorm from LAST YEAR and saying that 'renown 23 and 40 keg leg tender will appear in your collector’s cache" which was insulting enough as it, only to be told that it’s a new bug that no one knows how to fix yet. Still waiting on it, and I’ve had no information on whether it’s because I hit my cap on tender from the Trading Post objectives yet.
Bonus tender from promotions, seperate purchases etc will not count towards your cap earned from the month’s objectives.
My own tender from Plunderstorm purchases arrived some while later, you’ll have to collect from the chest. Uncollected Tendies will remain there until you collect them.
Like I said, it’s not in the cache. I bought my tender a couple hours after plunderstorm started, I got on and I did 4 matches as soon as possible to get it out the way, bought the tender, exited plunderstorm and I’ve still not seen it in the cache.