In the threads Special Relativity Primer and Special Relativity Primer discussion the twins paradox was raised. It was a long time ago so I apologise if others have already covered this issue.
Back in 2011 the discussion seems to have faded. The moderator said:
I guess that means that anyone who disputes SR is automatically talking pseudoscience.
So I am unsure whether this is the right forum for these discussions.
Anyway - here is my view of the twins paradox.
Ground control and Astronaut each has a clock and they synchronise their clocks to midday.
They agree to meet at 1 pm to check clocks.
Ground control sees the Astronaut recede further and further.
The astronaut sees Ground Control recede.
Then Ground Control sees the Astronaut approaching. The Astronaut sees Ground Control approaching.
They meet and check their clocks. Ground Control clocks shows 1 pm. The Astronaut's clock shows 1 pm.
Which is, of course, what we would expect.