I just wanted to report that mdpi_journal template is outdated. New mdpi.cls does not include \history{}, for example, and now it consists of three commands: \datereceived{}, \dateaccepted{} and \datepublished{}. Some other small details may have changed too, but I do not think this is a big update. I installed the last version of rticles:

> xfun::session_info('rticles')
R version 4.0.3 (2020-10-10)
Platform: x86_64-suse-linux-gnu (64-bit)
Running under: openSUSE Leap 15.2, RStudio 1.3.1073

Locale:
  LC_CTYPE=es_ES.UTF-8       LC_NUMERIC=C               LC_TIME=es_ES.UTF-8       
  LC_COLLATE=es_ES.UTF-8     LC_MONETARY=es_ES.UTF-8    LC_MESSAGES=es_ES.UTF-8   
  LC_PAPER=es_ES.UTF-8       LC_NAME=C                  LC_ADDRESS=C              
  LC_TELEPHONE=C             LC_MEASUREMENT=es_ES.UTF-8 LC_IDENTIFICATION=C       

Package version:
  base64enc_0.1.4   digest_0.6.27     evaluate_0.14     glue_1.4.2       
  graphics_4.0.3    grDevices_4.0.3   highr_0.8         htmltools_0.5.1.1
  jsonlite_1.7.2    knitr_1.30        magrittr_2.0.1    markdown_1.1     
  methods_4.0.3     mime_0.9          Rcpp_1.0.6        rlang_0.4.10     
  rmarkdown_2.6.6   rticles_0.18.3    stats_4.0.3       stringi_1.5.3    
  stringr_1.4.0     tinytex_0.29.1    tools_4.0.3       utils_4.0.3      
  xfun_0.20         yaml_2.2.1       

Best regards.

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