Do... Loop macro problem

Sorry if this code isn’t written elegantly – I am new to VBA and am learning as I go!

I’m working on a macro to clear the contents of all the cells in a certain area of the worksheet that are not locked and do not contain a hyperlink. (C7 is the first data-entry cell; EndPage1 is a specific cell near the bottom right of the sheet that sets the outside range of the cells to be cleared. This is the code so far:

Dim Message, Style, Title, Response As String
Dim CMax, RMax, CCounter, RCounter As Integer
'
Message = "Are you sure you want to clear Page 1?" & Chr(10) & "All data entered on this tab will be lost."
Style = vbOKCancel + vbQuestion + vbDefaultButton1
Title = "Warning"
'
Response = MsgBox(Message, Style, Title)
If Response = vbCancel Then
    Application.Goto reference:=Range("$c$7")
    '
    Else
    Worksheets("page 1").Unprotect Password:=""
    Application.Goto reference:="EndPage1"
    RMax = ActiveCell.Row
    CMax = ActiveCell.Column
    CCounter = 1
    RCounter = 1
    '
    Do
        Application.Goto reference:=Range("a" & RCounter)
        Do
            If ActiveCell.Locked = False Then
                If ActiveCell.Hyperlinks.Count = 0 Then
                    ActiveCell.MergeArea.ClearContents
                    End If
                End If
            ActiveCell.Offset(0, 1).Activate
            CCounter = ActiveCell.Column
            Loop Until CCounter = CMax
        RCounter = RCounter + 1
        Loop Until RCounter = RMax
    Application.Goto reference:=Range("$c$7")
    Worksheets("page 1").Protect Password:=" "
    
    End If
    
End Sub

It clears about the first 65 rows beautifully, then on the next row it gets “stuck” in the innermost do-loop and continues across the page rather than looping back to start in column A. Eventually it gets hung up and gives me an error. I can’t figure out why. Can anyone see where I’m going wrong?

Thanks!

ETA - saw the problem - see below.

Welcome to the forum.

Unmerging all cells would be a good place to start.