HTML Table Not Getting Updated

I already searched a lot to get my solution but I haven’t got even closer to it. Please help me.

I have been using HTML table in my pages since two years but I have recently got a problem that is really insane.

Whenever I try to update content in my HTML table, it’s not getting updated. Not just that, the other content of the page – outside of the table – is also not getting updated.

This is how my table code looks like.

<table style="text-align: center; line-height: auto; width: 100%;">
<tbody>
<tr bgcolor="#a6d1e2">
<td width="12%"><strong>XXX</strong></td>
<td width="25%"><strong>YYY</strong></td>
<td width="50%"><strong>ZZZ</strong></td>
</tr>
<tr bgcolor="#a6d1e2">
<th colspan="4">AAA</th>
</tr>
<tr bgcolor="#e5ecf1">
<td>XXX1</td>
<td>YYY1 </td>
<td>ZZZ1</td>
</tr>
<tr bgcolor="#e5ecf1">
<td>XXX2</td>
<td>YYY2</td>
<td>ZZZ2</td>
</tr>
</tbody>
</table>

I am sure this is because of table because if I remove that table and write anything else then the new update shows up. But if I try to change content while keeping table, it simply doesn’t get updated.
-Also it shows up as a blank page in preview even though the page has got content.

I even tried to use table with this HTML coding too but it’s just not working.

<table width="100%" border="0" cellpadding="0">
<tbody>
<tr>
<td width="25%">
<p align="center"><b>XXX</b></p>
</td>
<td width="25%">
<p align="center"><b>YYY</b></p>
</td>
<td width="50%">
<p align="center"><b>ZZZ</b></p>
</td>
</tr>
<tr>
<td colspan="4">
<p align="center”>AAA</p>
</td>
</tr>
<tr>
<td>
<p align="center">XXX1</p>
</td>
<td>
<p align="center">YYY1 </p>
</td>
<td>
<p align="center">ZZZ1</p>
</td>
</tr>
</tbody>
</table>

In both the cases, tables and content shows up till I don’t save them. As soon as I save, it just disappears.(Not getting updated.)

Can some one please help me? Because It’s very important for me to keep updating my tables and the problem is hurting my site badly.