FAQ:
Installing, updating and uninstalling?
Whenever.

Is it compatible with mods that reskin the MCM Menu like Dear Diary?
Yes (Nordic UI in ss).

Can you add XYZ?
I would be happy to take suggestions for new features. Since this is my first SKSE plugin I can't promise to make them. 

I don't see the XYZ mod configuration menu!
Detection of configuration menus is now automatic and you don't have to do anything. 
But if you have trouble with this, here is instruction:

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For various reasons, when registering mods, some script may delay the registration of the mod. To hasten/refresh it, you can use the "Refresh MCMs" button in the Maintenance tab, which will restart the mod registration. The second, way is to save the game and load it (this method always works!).

I found a bug!
To report bug, please: 

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• Create a report using the "BUGS" tab on this mod's page.
• Describe the next steps I need to take to reproduce the bug (this means you must know how to reproduce the error and be able to reproduce it yourself).
• Before reproducing the bug, enable "Debug Mode" on the Maintenance tab.
• Before reproducing the bug, enable logging by changing the Skyrim.ini file:
  [Papyrus].
bEnableLogging=1

• Reproduce the bug.
• Attach the files to the report: 
  "[PATH TO MY DOCUMENTS]\My Games\Skyrim Special Edition\SKSE\MenuMaid2.log",  
  "[PATH TO MY DOCUMENTS]\My Games\Skyrim Special Edition\Logs\Script\Papyrus.0.log".

Is it possible to make this mod compatible with another mod that modifies the SKI_ConfigManager.pex file?
Yes, you only need to change 4 functions (RegisterMod, UnregisterMod, OnMenuOpen, OnModSelect) as in the listings below.

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MenuMaid2 script for compilation

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ScriptName MenuMaid2 extends Quest Hidden

Bool Function Hired() Global Native
Bool Function RegisterMod(Form a_menu, String a_modName) Global Native
Int Function UnregisterMod(Form a_menu) Global Native
Function MenuOpen() Global Native
Form Function ModSelect(Int id) Global Native

RegisterMod

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Int function RegisterMod(SKI_ConfigBase a_menu, String a_modName)

    self.GotoState("BUSY")

    if MenuMaid2.Hired()
        If !MenuMaid2.RegisterMod(a_menu as Form, a_modName)
            GotoState("")
            return -1
        EndIf
    EndIf

    if _configCount >= 128
        self.GotoState("")
        return -1
    endIf
    Int i = 0
    while i < _modConfigs.length
        if _modConfigs[i] == a_menu
            self.GotoState("")
            return i
        endIf
        i += 1
    endWhile
    Int configID = self.NextID()
    if configID == -1
        self.GotoState("")
        return -1
    endIf
    _modConfigs[configID] = a_menu
    _modNames[configID] = a_modName
    _configCount += 1
    _addCounter += 1
    self.GotoState("")
    return configID
endFunction

UnregisterMod

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Int function UnregisterMod(SKI_ConfigBase a_menu)

self.GotoState("BUSY")

If MenuMaid2.Hired()
Int i = MenuMaid2.UnregisterMod(a_menu as Form)
GotoState("")
return i
EndIf

Int i = 0
while i < _modConfigs.length
if _modConfigs[i] == a_menu
_modConfigs[i] = none
_modNames[i] = ""
_configCount -= 1
self.GotoState("")
return i
endIf
i += 1
endWhile
self.GotoState("")
return -1
endFunction

OnMenuOpen

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function OnMenuOpen(String a_menuName)

self.GotoState("BUSY")
_activeConfig = none

if MenuMaid2.Hired()
MenuMaid2.MenuOpen();
return
EndIf

ui.InvokeStringA(self.JOURNAL_MENU, self.MENU_ROOT + ".setModNames", _modNames)
endFunction

OnModSelect

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function OnModSelect(String a_eventName, String a_strArg, Float a_numArg, Form a_sender)
If MenuMaid2.Hired()
if (_activeConfig)
_activeConfig.CloseConfig()
endIf

_activeConfig = MenuMaid2.ModSelect(a_numArg as Int) as SKI_ConfigBase
if (_activeConfig)
_activeConfig.OpenConfig()
EndIf
return
EndIf

Int configIndex = a_numArg as Int
if configIndex > -1
if _activeConfig
_activeConfig.CloseConfig()
endIf
_activeConfig = _modConfigs[configIndex]
_activeConfig.OpenConfig()
endIf
ui.InvokeBool(self.JOURNAL_MENU, self.MENU_ROOT + ".unlock", true)
endFunction