ANSWER:

These are two separate things.

You have committed a major sin if you missed praying isha without a valid reason but this does not stop you from praying the night prayers.

Can I pray night prayer if I have missed my isha ?

Prayer, Taraweeh, Tahajjud and Qiyam-ul-Layl | August 27, 2021 8:00 am
Previous

When two people are praying together and then a third person joins the prayer where should he stand?? What about the 2nd person??
Next

Sheikh, there are two types of sujood of forgetfulness, when we have to give sujood after salaam do we give tasleem in both directions then give sujood and end prayer without anymore tasleem? please clarify and kindly do not give link to previously answered question because that does not answer my question.