Complex sentence: Trump and his lawyers claimed they were not keeping records and digital data although it was revealed that Trump had launched an own high-speed internet provider in 1998 and an IBM Domino server had been installed for emails and digital files in 1999.
Split into simpler sentences: Trump and his lawyers claimed they were not keeping records and digital data although it was revealed that Trump had launched an own high-speed internet provider in 1998. Also an IBM Domino server had been installed fpr emails and digital files in 1999.