[VBA Macro on RTD server returns subscribed]

Good morning. Hope someone here can help. I build a VBA macro to return market prices when refreshed using the RTD server. Sometimes it works, but sometimes it returns "subscribed" to the field and I am wondering why. Is there anyone who knows why and how I can get around it

[Corporate Account]

Good afternoon. I am a trader on IG but want to change to a corporate account. Please what do I need to do and what documents do I require