The fact that you cannot open TP here is very dangerous, especially if you need to flee : if the bosses camp by the Red portal, you're gonna die a lot. Always try NOT to have them close to you if you need to return to Harrogath, and use the pathway presented here :
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Squelches this trader, making their offers on your trades invisible to anyone except themselves. Their trade listings will also be hidden from your marketplace.
Your squelch list can be managed and edited from Top right dropdown > Account Prefs > Squelches.