I assume that you have been trying to access the service online via web browser and receiving this error message?
If this is the case, then you may check with the different web browser once.
Also, turn the internet security software off for a while and check back.
[Antivirus software can help protect your computer against viruses and other security threats. In most cases, you shouldn't disable your antivirus software. If you have to temporarily disable it to install or activate other software, you should re-enable it as soon as you're done.]
You can also access it via desktop application Adobe Reader DC. If you have not downloaded it yet, then you may please check the conversion with it.