Please read this before posting a question in dartR's google group
forum (scrolldown):
- You
     have checked if your question has been asked before using the search box
     at the top of the google groups webpage.
- You
     have read the relevant tutorials and vignettes. You can access these in this webpage.
- You
     have read the help page of the function(s) you have problems with. You can
     access these by typing in the R console: help(function_name) or ?function_name
- You
     have updated R, R-studio and your packages. After updating, it is a good
     idea to restart your machine. You can update your packages by typing in
     the R console: update.packages(ask = FALSE). A nice tutorial to update R is here.
- You
     have run the function gl.compliance.check() on your genlight object to
     check it complies with dartR expectations and amends it if necessary.
- If
     your question is related to R or R-studio rather than dartR, you have
     looked for potential answers online. A good place to start is here.
- You
     have read the relevant scientific literature if your question is related
     to methodology, theory, results interpretation, etc.  
When posting a question in dartR's google group
forum provide a minimal reproducible example that allows others to
exactly reproduce your issue on their machines. This example consists of the
following items:
- A
     minimal dataset necessary to demonstrate the problem. You can use the
     datasets included with dartR; SNP data: platypus.gl, bandicoot.gl, possums.gl, testset.gl and presence/absence data: testset.gs.
- The
     minimal runnable code necessary to reproduce the issue, which can be run
     on the given dataset.
- All
     necessary information on the used libraries, the R version, and the OS it
     is run on. You can obtain this information by typing in the R console:
     sessionInfo()
See more tips here.
After posting a question in dartR's google group
forum:
- Check
     your junk mail regularly because it is common that mails from google
     groups end there.  
- Contribute
     to the forum if you know the solution to a user question or can provide
     any help.