The given piece of text is HapackTM{Wepelcopomepe_Topo_HAPACKTMCTF_2020!}
I saw that removing pa from HapackTM gives HackTM, i.e, the flag format.
Simply remove 'p' and a letter alongside it. So, I removed pe, po, pa from the text and it becomes:
HackTM{Welcome_To_HACKTMCTF_2020!}
Which is the required Flag.