Admiral, could you please make a screenshot of the issue (e.g. launcher process in task manager), then open Windows Command Prompt (press Windows + R), then type:
%HOMEPATH%\AppData\Local\Ultimate Admiral Dreadnoughts\log
There will be log files from the launcher (e.g. 19.04.20.txt)
Please copy the latest log file and screenshot, then contact Xsolla support team via live chat option (help.xsolla.com) or email (support@xsolla.com), describe your issue and attach both files