For the past 3 months I have had no problems getting my

For the past 3 months I have had no problems getting my domains mapped.

Example: http://attoohadvisors.markwentzel.co.za is mapped to http://www.markwentzel.co.za and the same with about 30 other sites.

For past 2 weeks the mapping has stopped working. For example I cannot get http://natashapike.attoohadvisors.co.za mapped to the registered domain http://www.natashapike.co.za

Why would this happen and what should I do to fix it.

Please assist.

Regards.