FRANKFURT (Reuters) – German landlord Adler Group on Thursday said KPMG had not refuted all the claims a short seller had made against it and it had asked the accountancy firm to extend a special audit it is carrying out. Adler has rejected the allegations. Adler said on Thursday KPMG had provided the company with an interim status of its review of allegations by short seller Fraser Perring’s Viceroy Research. Viceroy Research, in a report published on Oct. 6, 2021, said Adler Group’s “balance sheet has been artificially inflated to a significant degree, its shares are not investible”, causing…