:::::Re "agreements regarding control of territory". Cannot agree. The agreement was that the parties do not interfere into the another party's activity within its sphere of influence. That does not constitute an alliance. 
 :::::Re "transmission of radio signals to support invasion". In actuality, Germany didn't request to transmit the signals to support invasion: the request was to transmit a signal "for urgent aeronautical experiments"; of course, the real reason behind the request was a secret de Polichinelle, however, the fact that this reason had not been officially disclosed meant that neither Germany nor the USSR considered themselves as military allies. 
 :::::Re "supplying war materiel". You probably meant not materiel, but "materials" (the USSR provided Germany mostly with raw materials needed for its war industry. However, the USA did the same for Japan during first years of SSJW. That didn't make the USA a Japanese ally, and, similarly, massive economic aid to the UK didn't make the USA the British ally before Dec 1941. 
 :::::Re "There is no reason not to use the proper term in this matter." The reason is that many (if not majority) sources do not consider them as the allies. 
 :::::To avoid repetition of the same arguments again and again, please, re-read the discussion.