I am using the following code for Buy button in my Angular App. The button code was generated from a Sandbox account. Clicking on it redirects to PayPal payment page and shows the error: "Things don't appear to be working at the moment. Please try again later." <form ngNoForm action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post" target="_top">
<input type="hidden" name="cmd" value="_s-xclick">
<input type="hidden" name="hosted_button_id" value="XXXXXXXX">
<table>
<tr>
<td>
<input type="hidden" name="on0" value="Packages">Packages</td>
</tr>
<tr>
<td>
<select name="os0">
<option value="100 Million">100 Million $10.00 USD</option>
<option value="500 Million">500 Million $50.00 USD</option>
<option value="1 Billion">1 Billion $100.00 USD</option>
</select>
</td>
</tr>
</table>
<input type="hidden" name="currency_code" value="USD">
<input type="image" src="https://www.sandbox.paypal.com/en_GB/i/btn/btn_buynowCC_LG.gif" border="0" name="submit" alt="PayPal – The safer, easier way to pay online!">
<img alt="" border="0" src="https://www.sandbox.paypal.com/en_GB/i/scr/pixel.gif" width="1" height="1">
</form>
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