How to remove "Common Price" from Product Page?

-- url of the page with the problem -- : ssavp.com
-- HikaShop version -- : 4.1.0
-- Joomla version -- : 3.9.5
-- PHP version -- : 7.2.2
-- Browser(s) name and version -- : Chrome 75.0.3770.142

After reading and trying the options listed here , I have yet to get the Common Price to go away.

Here's what I've tried:

1. Remove the entry from Retail Price in the Prices and Taxes area of the backend product page.

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When that didn't work, I moved to the next idea.

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2. Edited the Front-End CSS file from the HikaShop Configuration screen. I added the following line:
.hikashop_product_msrp_price{ display:none; }

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That didn't work either.

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Now I'm here looking for other options. Any ideas?