Buy Now Button again

[nfo]

For some unknown reason my buy now button doesnt work anymore..

Also the error page is not very helpfull:

At this time, we are unable to process your request. Please return to  Test Store and try another option.

<form method="post" action="https://www.sandbox.paypal.com/cgi-bin/webscr">
  <input type="hidden" value="_xclick" name="cmd">
  <input type="hidden" value="http://fitnesscenter.sport-oesterreich.at/payment" id="notify_url" name="notify_url">
  <input type="hidden" value="http://fitnesscenter.sport-oesterreich.at/Abbruch" name="cancel_return">
  <input type="hidden" value="http://fitnesscenter.sport-oesterreich.at/Danke" name="return">
  <input type="hidden" value="c4ca4238a0b923820dcc509a6f75849b" name="custom">
  <input type="hidden" value="my sandbox seller email" name="business">
  <input type="hidden" value="AT" name="lc">
  <input type="hidden" value="Marketing Package" name="item_name">
  <input type="hidden" value="services" name="button_subtype">
  <input type="hidden" value="0" name="no_note">
  <input type="hidden" value="EUR" name="currency_code">
  <input type="hidden" value="Laufzeit" name="on0">Laufzeit

  <select name="os0">
    <option value="12  Monate">12 Monate €30.00 EUR</option>
    <option value="24  Monate">24 Monate €40.00 EUR</option>
  </select>

  <input type="hidden" value="EUR" name="currency_code">
  <input type="hidden" value="12 Monate" name="option_select0">
  <input type="hidden" value="30.00" name="option_amount0">
  <input type="hidden" value="24 Monate" name="option_select1">
  <input type="hidden" value="40.00" name="option_amount1">
  <input type="hidden" value="1" name="option_index">
  <input border="0" type="image" alt="Jetzt einfach, schnell und sicher online bezahlen &ndash; mit PayPal." name="submit" src="https://www.paypalobjects.com/de_DE/AT/i/btn/btn_buynowCC_LG.gif">
  <img border="0" height="1" width="1" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" alt="">
</form>

[snowshoe]

Just from a brief check of the code you posted:

Change this line:

<input type="hidden" value="1" name="option_index">

It should be this:

<input type="hidden" value="0" name="option_index">

option_index value=0 is associated with variable on0

As I don't have enough info to actually test, that's what I see for now.

Last, you have dup line of code:

<input type="hidden" value="EUR" name="currency_code">

Won't hurt but, not needed.

[fkagel]

By any chance, did 'Buy Now' stop working for multiple browsers or just Internet Explorer 6? Ours just stopped working in IE, We do not get any error message.

[snowshoe]

Sorry, your tagging a totally differerent question to the orignal post, you should have started a new post.

As for you question, have not seen any issues in general.  Can't speak for your code as I don't know what it looks like.