is it okay to start a paragraph with Due to? [duplicate]
Here's a question that the Google NGram Viewer can actually help with. Look at the values on the Y axis. The usage of "Due to" at the beginning of a sentence has reached 0.0008% in 2008. That may not sound like much, but it represents orders of magnitude more frequency than most of the NGrams offered as proof on this SE site.
Only the severest and most arbitrary prescriptivist would argue that all these instances are wrong.