switching weapons
What is the issue exactly? Switching weapons while in combat (swamping weaps)? Or you just want to replace your current weapon but can’t? Be sure you have enough level to use it and that your profession can actually use the said weap (Necros can’t use gswords, for example). Some weapons, like staffs, don’t allow you to hold on one more weapon at the same time.
You can’t change weapons or armor while still in combat. You need to get out of combat to change things around.
~An intellectual says a simple thing in a hard way. An artist says a hard thing in a simple way.~
Make sure you’re level 7 or above, and trying to equip a weapon you can use. Might not be your level, or unusable by your class. If it’s specifically a problem using the hotbar weapon swap, sometimes it gets bugged when you swap weapons and view a cinematic shortly afterward, seemingly locking your weapon in. Just go to your Hero Panel, the equipment tab, and manually swap weapons. It’ll reset the hotbar weapon swap.
Or are you trying to double click to equip and you just keep putting something in your main hand? You can right click the weapon in your bags for a drop down and select equip in off hand, or drag it from inventory to the hero panel weapon slot where you want it.
As noted above, you cannot be in combat while doing that. If you are high enough level to do in-combat swapping, the default hotkey for that is the ~ (just above the Tab key and to the left of the 1 key). It will swap between the two sets you have in the hero panel, with a short cooldown if in combat, no cooldown out of combat.