“Continual” means repeated but with breaks in between.
Example: “Our computer had a continual problem, it used to be extremely slow.” The computer was still working well, but from time to time it was extremely slow.
Continual things come and go, like arguments or rain.
“Continuous” means never-ending.
Example: “Jongeward and Woodhouse ended up breaking the record for continuous flight. They stayed in the air for 1,124 hours.”
I hope it helps!