I didn't say there was anything "wrong" with Norton Antivirus Online. [1]
You don't know if replacing it would have resolved your problems because you didn't do so.
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[1] The fact that you obtained the application from an ISP in the USA (i.e., CenturyLink) and the fact that you're no longer a CenturyLink subscriber - since you now reside in Thailand - may be a violation of the EULA (license) you accepted when you installed it:
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Norton^™^ AntiVirus Online: With these services, customer receives the right to use the products on the specified number of PCs during customer's subscription term with CenturyLink...
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Source: http://www.centurylink.com/common/disclaimers/general.html#high_speed_internet_basics