'qualtRics' R package API call returns "port 443: Connection refused". What am I missing?

Question

Good afternoon!

I'm a self-taught R developer so I might not be using the correct jargon, but please bear with me.

I have written a script to clean and process data which has been manually exported from Qualtrics, however I would like to further automate my data process workflow by tapping directly into the Qualtrics API. I am attempting to use the qualtRics package to handle the API call, but when I execute the function I get a return of port 443: Connection refused. I have yet to find a workable solution for this. I have followed the standard workflow Code below:

#Save API Key and Base URL as environment variables
qualtrics_api_credentials(
 api_key = "<API_KEY>",
 base_url = "<BASE_URL>",
 overwrite = TRUE,
 install = TRUE
)

#Refresh environment
readRenviron("~/.Renviron")

#Pull list of surveys
Surveys <- all_surveys()

#Fetch survey data from Survey based on Survey ID
SurveyData <- fetch_survey("Survey_ID",
                           last_response = NULL,
                           start_date = "2019-11-18",
                           end_date = NULL,
                           unanswer_recode = NULL,
                           limit = NULL,
                           include_questions = NULL,
                           save_dir = NULL,
                           force_request = FALSE,
                           verbose = TRUE,
                           label = TRUE,
                           convert = TRUE,
                           import_id = FALSE,
                           local_time = FALSE)

For both the all_surveys() and fetch_survey() functions, if I use https:// I get a return of:

"Error in curl::curl_fetch_memory(url, handle = handle) : Failed to connect to port 443: Connection refused"

and if I use http:// a return of:

"Error in curl::curl_fetch_memory(url, handle = handle) : Failed to connect to port 80: Connection refused"

Is there a workaround or a different approach I can take to pull Qualtrics survey data into a data frame via the API?

Best regards