I'm a SAMI and MAM subscriber in Germany, and had similar problems receiving any issues after November 2020. Dave, at the time working for the magazines,
very kindly helped me out with the December 2020 through April 2021 issues - contacting Mark at MA was a total loss and did not result in anything but
soothing promises which were never kept.
Out of the blue, I did receive May 2021 issues for both magazines, and in the last days, August/September 2021 for MAM.
You will have a pretty good chance of guessing the odds of me renewing my subscriptions ...