The library extends the opening hours. You can find further information here.
As of now a publication server is available for open access publications of scientific papers, congress papers and official publications of the MHH (annual reports, newsletter etc.). You can connect to the server via this link https://mhh-publikationsserver.gbv.de
For 2020 a DFG-sponsered publication-fund is available for the publication in Open-Access-Jounals. You can find further information about the requirements for the funds here https://www.mhh.de/en/institute-zentren-forschungseinrichtungen/bibliothek-2/publication-fund.