I have just put lets encrypt on sites I manage after moving to a new provider to do so: needs patience

Might the gimp chat site benefit from lets encrypt and getting a padlock or are there other issues I'm missing

GimpChat would mostly benefit from an active admin.

ofnuts is correct.
When Gnutux was the admin he built it up to what it was & was here almost every day.
Because of bad health he had to sell and the now owner of Gimp Chat hardly ever visits nor will he make anyone else a Administrator.