ISBoxer and EQ work fine together. It is something on your end.
If you Disable KeyMaps using the disable button or the hotkey SHIFT+ALT+M, then any keys you are pressing are going straight through to the current game window, so if it is not working with Key Maps disabled, then it is probably the game, although you will only be able to determine this completely by running outside of InnerSpace and seeing if you have the same issue, and if you have any addons or other software things which might be trapping the keys.
In the EQ ISboxer forum in
this post there is some info on some bugged keybinds that using in game will provide some issues which are:
BUGGED, INVALID, OR OTHERWISE UNAVAILABLE KEYBINDS FOR EQ: Please post if you find others.
ALT- Any Key / CTRL-ALT Any Key: Will send the keystroke; however it also opens the Item Preview Window if used on a Hotbutton made directly from an item.
CTRL-N: Bugged or Hardcoded in the EQ client to open the Mail Window even if the Keybind is unmapped from Options -> Keys -> UI -> Mail Window Toggle
Enter:
Additional InfoNumPad Enter:
Additional Info
There is no issue with using an in game keybind as a hotkey in ISBoxer. In fact it is fairly normal to do. Any hotkeys in ISBoxer will be trapped and then the actions in the mapped key executed. Most of the time, one of those actions is to send the same keystrokes used for the hotkey to one or more of the game clients, thus performing whatever action is associated with it.
Any keys that are not set for hotkeys fall through to the active game window (otherwise movement would be a PITA). When Key Maps are disabled, provided your key maps are disabled by the toggle (the default ones are), then any hotkeys will no longer be trapped and just fall through to the active game window.
Edit:Looking at your profile, the Power Level/Nuker stuff/others/Myman Heals key maps do not get disabled when you hit the toggle, so they will still be active when you are setting keybinds in game, and depending on which character you are on, then the game may not be receiving what you think it should be.
Currently your Assist is on SHIFT+U, but it is sending SHIFT+Y to all the characters. If you happen to be attempting to set the SHIFT+U as the in game keybind, then the game will actually be receiving SHIFT+Y, because the SHIFT+U hotkey is never disabled.
It also means if you were trying to test your in game bind, then it would currently need to be a different value to your hotkeys in ISBoxer.
As for the Press A Key, line not disappearing, I don't think it ever does anywhere I can see. Sometimes you might need to move the mouse pointer over the text (or even click there first) as the focus may have moved off that control so the keyboard input is not being read. But if the input is not being accepted immediately when the focus is in the correct place, then it sounds like you have something else interfering (AVG/Avast are usually big culprits), and will usually require a
diagnostic for us to tell you what it might be.
Double Edit;It's also worth noting you have Key Maps assigned to both Characters and Character Sets. As a general rule, you should avoid assigning Key Maps to both, especially when you want to use the same Hotkey in multiple key maps.
Assignment of Key Maps to Character Sets means each character in the set will receive that Key Map. Assignment to Characters means that Character receives that Key Map. So Character Chum is assigned "Nuker stuff" via both Character Set "6 Crew" and directly as a character. Chum is also assigned the Power Level Key Map, again both via Character Set "Power Level" and directly. As both Nuker stuff and Power Level both have mapped keys with the same Hot Key, then the resulting actions for Chum may be unpredictable.