ESA50 PDF Form Print Out Issue

I am currently filling in the ESA50 form via the downloaded PDF form which has been saved to my computer. Each section has been saved after I filled it in & subsequently displays on when I return to it.

Having done a test print of one page, I find that whilst the boxes I have crossed along with typed personal details have registered, any further typed information (apart from the X's) starting from Part 1, page 8 does not display on the printed page - those areas remain blank (yes, the ink cartridge is full).

Any ideas?

Apologies for not replying sooner Gordon. I've had issues with getting on the forum and email. The problem was eventually sorted by changing the browser I accessed the form via.