The Pope, according to the German bishops,  the Argentinian bishops, the Cardinal Vicar of Rome, Cardinals Cupich and Farrell and bishop McElroy to name a few,  thinks that there are circumstances when divorced and remaried couples living 'more uxorio' may receive Holy Communion. That is how they interpret Amoris Laetitia and the Pope hasn't denied that interpretation.
The four Cardinals and their supporters do not believe that this is permissible under any circumstances and that has been the position of Cardinal Müller even up to the present although he seems less firm about it now. The Pope won't deny or affirm what position he holds so how can it be said that Müller is supporting him?
Incidentally calling someone a liar is hardly a civil comment, is it.