The problem looks to be how your second if statement is formed, you have it like this:
<?php if ($row_WAATKcustomers['CountryID'] = 236) { // Show if recordset not empty ?>
This is not comparing the countryID to 236, you are trying to set it to 236. The code after this if statement will execute always regardless. You need to update this to check if it is equal to this value like this:
<?php if ($row_WAATKcustomers['CountryID'] == 236) { // Show if recordset not empty ?>
or
<?php if ($row_WAATKcustomers['CountryID'] == '236') { // Show if recordset not empty ?>