JavaScript ads cant go through my site

This has happened many times in the past and I had to get my developer to fix the JS errors in order for my javasscript ads to show. My ad tags from investingmediasolutions have hard time getting thur my site due to js errors, however, it didnt affect other ad tags, my developer said its because the theme has bad coding, can you take a look for me why the ad not going thur?

I have spent so much money on this, I’m very frausted about this, need a long term solution
:

<!–Include OAS Analytics Setup Script 728×90 Top–>
<script type=”text/javascript”>
var page_count = ‘off’;
if (typeof OAS_rdl == ‘undefined’) {
var OAS_rdl = ”;
var OAS_CA = ”;
page_count = ‘on’;
document.write(‘<script type=”text/javascript” src=”https://oascentral.investingmediasolutions.com/Scripts/oas_analytics.js”></scr&#8217; + ‘ipt>’);
}
</script>
<script type=”text/javascript”>
var OAS_url = ‘https://oascentral.investingmediasolutions.com&#8217;;
var OAS_sitepage = ‘InvestmentWatchBlog’;
var OAS_pos = ‘Top’;
var OAS_searchterms = ”;
var OAS_taxonomy = ”;
if (typeof OAS_RNS == ‘undefined’){
var OAS_RN = new String (Math.random());
var OAS_RNS = OAS_RN.substring(2, 11);
}
if (OAS_searchterms != ”) { OAS_searchterms += ‘&’; }
if (OAS_taxonomy != ”) { OAS_taxonomy = ‘&’ + OAS_taxonomy; }
if (page_count != ‘on’) { OAS_taxonomy = ‘&oas_pv=no_analytics’ + OAS_taxonomy; }
document.write(‘<script type=”text/javascript” src=”‘ + OAS_url + ‘/RealMedia/ads/adstream_jx.ads/’ + OAS_sitepage + ‘/1’ + OAS_RNS + ‘@’ + OAS_pos + ‘?’ + OAS_searchterms + ‘XE’ + OAS_taxonomy + OAS_rdl + ‘&if_nt_CookieAccept=’ + OAS_CA + ‘&XE”></scr’ + ‘ipt>’);
</script>

<!–Include OAS Analytics Setup Script 300×250 TopRight–>
<script type=”text/javascript”>
var page_count = ‘off’;
if (typeof OAS_rdl == ‘undefined’) {
var OAS_rdl = ”;
var OAS_CA = ”;
page_count = ‘on’;
document.write(‘<script type=”text/javascript” src=”https://oascentral.investingmediasolutions.com/Scripts/oas_analytics.js”></scr&#8217; + ‘ipt>’);
}
</script>
<script type=”text/javascript”>
var OAS_url = ‘https://oascentral.investingmediasolutions.com&#8217;;
var OAS_sitepage = ‘InvestmentWatchBlog’;
var OAS_pos = ‘TopRight’;
var OAS_searchterms = ”;
var OAS_taxonomy = ”;
if (typeof OAS_RNS == ‘undefined’){
var OAS_RN = new String (Math.random());
var OAS_RNS = OAS_RN.substring(2, 11);
}
if (OAS_searchterms != ”) { OAS_searchterms += ‘&’; }
if (OAS_taxonomy != ”) { OAS_taxonomy = ‘&’ + OAS_taxonomy; }
if (page_count != ‘on’) { OAS_taxonomy = ‘&oas_pv=no_analytics’ + OAS_taxonomy; }
document.write(‘<script type=”text/javascript” src=”‘ + OAS_url + ‘/RealMedia/ads/adstream_jx.ads/’ + OAS_sitepage + ‘/1’ + OAS_RNS + ‘@’ + OAS_pos + ‘?’ + OAS_searchterms + ‘XE’ + OAS_taxonomy + OAS_rdl + ‘&if_nt_CookieAccept=’ + OAS_CA + ‘&XE”></scr’ + ‘ipt>’);
</script>

this is my site:
https://investmentwatchblog.com/

The page I need help with: [log in to see the link]