Testing maintenance

In the new screenshot you provided, I found that your web page has <td> tags.

<td role="gridcell">...</td>

This implies that the HTML has at least 1 <TABLE> element which has one or more <tr> element. The <tr> element represents rows of a grid. The overall structure of the page would be as follows.

<html>
...<!-- more markup here -->
<body>
...
<table id="TBL1">
<tbody>
<tr>
    <td><!-- Type/Tool --></td>
    <td><!-- Config --></td>
    <td><!-- Resource --></td>
    <td><!-- Date --></td>
    <td><!-- Status --></td>
    <td><!-- Summary --></td>
    <td><!-- Actions-->
        <button><!--  --></button>
        <button><!-- Download --></button>
        <button><!--  --></button>
        <button><!--  --></button>
        <button><!--  --></button>
    </td>
</tr>
<tr>....</tr>
<!-- more rows here -->
<tr>....</tr>
</tbody>
</table>
...<!-- more markups here -->
</body>
</html>

Now let me assume that the table has id="TBL1" that uniquely identifies that table among all.

The Download button in the 1st row can be expressed by a xpath:
//table[@id='TBL1']/tbody/tr[1]/td[7]/button[2]

The Download button in the 2nd row can be expressed by a xpath:
//table[@id='TBL1']/tbody/tr[2]/td[7]/button[2]

The Download button in the 3rd row can be expressed by a xpath:
//table[@id='TBL1']/tbody/tr[3]/td[7]/button[2]

and so on. No matter how many rows you have in the page, you can identify a single Download button by those XPath expressions in a uniform format.