I am unable to change the Home currency on my QP-Plus account as the edit button(pencil button) is not appearing.. does anyone know how to resolve this issue?

Let me help you fix this issue, Ayyappa.

Once you turn on the Multicurrency feature in QuickBooks Online (QBO), the pencil icon won't appear in this section. Instead, you'll only see the Manage Currencies link for you to change currencies. Below is a screenshot for a guide:  

You can purge your company if you've already turned on the feature with an incorrect home currency. However, this will delete your data and start over from scratch. 

Moreover, learn how you can sign in to your Intuit Account or product so you can edit your account details such as User ID, password, and email address. or phone number for your security. I've added this article for more details: Update or Change your Intuit Account Sign-in Information.

Drop your reply below if you need further assistance with multicurrency or have any questions about your account. The Community is always here to help you anytime.