I am eager to do an LLM in IT and Intellectual property law. Unfortunately, I can not afford an LLM abroad although the program in Edinburgh is still reasonable and well recognized. From a financial point of view I consider Leibniz University in Hannover. Can anybody advise?

Avoid this EULISP program at Hannover. I just wasted 2 months of my life and hundreds of euros in visa fees and flight tickets only to find that the university gives zero support to the international non-EU students. The program coordinator with initials I R in fact threatened me in email that he will report me to the police just because the foreign office and Embassy had not informed them that I had voluntarily cancelled my student visa and gone back to my home country. The tone of his email was as if I have disappeared like one of the undocumented migrants entering Germany right now. On top of it, to go Germany as a genuine student, non-EU have to block 8000 euros in a blocked bank account in germany, so before returning home, I had to run from pillar to post to recover my money.

Depending on your home country, Germany may be a good place for refugees and asylum seekers but after looking at the treatment of genuine non-EU students who went through enormous trouble and expenditure to get a visa and have test scores and degrees, I will not recommend that any non-EU go for this course.
Because the whole of Germany is focused on housing refugees, nobody is bothered with the accommodation plight of international students, even though they have entered the country through legal channels.
From what little I observed of how the program was being coordinated, it will not be worth the time and money wasted. I had other offers including one with full scholarship and I regret I wasted my year at this crappy EULISP experience.
Avoid it!