Same problem with Spanish Keyb layout, that also require the AltGr for the ~ symbol.

I have face same problem with English Keyboard layout, that also require the Alt Gr for the ~ symbol.

Same problem here, but I found a solution (or at least a workaround) that might work:

Using the AutoHotkey utility and this script, I was able to get the keyboard shortcut to work even on my Finnish layout:

#InstallKeybdHook

Numpad1 Up::
    Send {vk5Bsc15B Down}
    Send {vkC0sc029 Down}
    Send {vkC0sc029 Up}
    Send {vk5Bsc15B Up}
    return

Now, every time I press (or actually release) the NumberPad 1 key, Groupy will switch to the next tab.

Now, if Groupy got a similar shortcut for stepping backwards (like using Shift+Alt-Tab), switching between tabs with the keyboard would become actually useful!

Neil, thanks - wasn't aware of the backwards option with Ctrl modifier!

Until the new version comes out, this modified AutoHotkey workaround-script gives the feature to those that can not produce the required keyboard combination yet. (Numpad1 switches to the previous tab, Numpad3 to the next one):

#InstallKeybdHook

; Groupy, Go to previous tab
Numpad1 Up::
    Send {vkA2sc01D Down}
    Send {vk5Bsc15B Down}
    Send {vkC0sc029 Down}
    Send {vkC0sc029 Up}
    Send {vk5Bsc15B Up}
    Send {vkA2sc01D Up}
    return

; Groupy, Go to next tab
Numpad3 Up::
    Send {vk5Bsc15B Down}
    Send {vkC0sc029 Down}
    Send {vkC0sc029 Up}
    Send {vk5Bsc15B Up}
    return