Tex: Table only works with blank row?

Table only works with blank row?
I hope you found a solution that worked for you :)
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Thanks to all those great people for their contributions!
(tex.stackexchange.com/users/348266/daniel-granger)Daniel Granger
(tex.stackexchange.com/users/277964/cabohah)cabohah
(tex.stackexchange.com/users/18189/zarko)Zarko
(tex.stackexchange.com/users/5001/mico)Mico
A special thanks goes out to the (tex.stackexchange.com/questions/728674/table-only-works-with-blank-row)Stackexchange community
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If anything is off, please write me at peter D.O.T schneider A.T ois42.de
tables multirow multicolumn cell