perch event traduction

Just trying to translate things :-) I translated some words but nothing changes in the interface. Tried to log out and log back in but no changes.

See this capture

I changed this, but there is a strange behaviour : when i log out and log back in a frfr1.txt is generated... see https://d.pr/i/xuj2d

Yes, and saved it, reloaded the page, empty cache.. No fix.

No, the file has now correct name and no supplementary file is created

Perch: 3.0.1
Production mode: Production (100)
Installed apps: content (3.0.1), assets (3.0.1), categories (3.0.1), perch_events (1.9.5), perch_forms (1.9)
DB driver: PDO
DB tables: perch2_categories (0), perch2_category_counts (0), perch2_category_sets (0), perch2_content_index (2279), perch2_content_items (221), perch2_content_regions (41), perch2_events (3), perch2_events_categories (0), perch2_events_to_categories (0), perch2_forms (3), perch2_forms_responses (27), perch2_mailchimp_campaigns (1), perch2_mailchimp_imports (0), perch2_mailchimp_lists (1), perch2_mailchimp_subscribers (2), perch2_mailchimp_subscriptions (2), perch2_mailchimp_webhooks (1), perch2_menu_items (10), perch2_navigation (0), perch2_navigation_pages (0), perch2_page_templates (4), perch2_pages (29), perch2_resource_log (149), perch2_resource_tags (0), perch2_resources (31), perch2_resources_to_tags (0), perch2_settings (25), perch2_user_passwords (0), perch2_user_privileges (35), perch2_user_role_privileges (16), perch2_user_roles (2), perch2_users (4)
Users: 4
App runtimes:
<?php
$apps_list = [
    'content',
    'categories',
    'perch_forms',
    'perch_events'
];
Editor plug-ins:
H1: de7a96194575368c209328c88c5a6349
L1: 8acd15a4633b33d1efb6b1a1e5df7453
F1: 0c66c2e1f82f9e0b7617b2cb8270f2c7
headerColour: #d3d2d4
content_singlePageEdit: 1
helpURL:
siteURL: /
hideBranding: 1
content_collapseList: 1
lang: frfr1
update_2.8.27: done
latest_version:
on_sale_version:
update_2.8.29: done
headerScheme: light
dashboard: 0
hide_pwd_reset: 0
content_hideNonEditableRegions: 0
content_frontend_edit: 0
update_2.8.31: done
perch_mailchimp_api_key: 2cbfe683fdce38762dad89987d117479-us14
perch_mailchimp_campaign_url: /mailchimp/campaign/{campaignSlug}
perch_mailchimp_secret: c176299
update_2.8.32: done
update_2.8.34: done
update_3.0.1: done
perch_events_update: 1.8
perch_events_detail_url: /events/event.php?s={eventSlug}
PERCH_DEVELOPMENT: 10
PERCH_STAGING: 50
PERCH_PRODUCTION: 100
PERCH_DB_USERNAME: #######
PERCH_DB_SERVER: #######
PERCH_DB_DATABASE: ########
PERCH_DB_PREFIX: perch2_
PERCH_TZ: Europe/Paris
PERCH_EMAIL_FROM: #########
PERCH_EMAIL_FROM_NAME: #######
PERCH_LOGINPATH: /perch
PERCH_PATH: /home/balintsmbfrance/public_html/perch
PERCH_CORE: /home/balintsmbfrance/public_html/perch/core
PERCH_RESFILEPATH: /home/balintsmbfrance/public_html/perch/resources
PERCH_RESPATH: /perch/resources
PERCH_HTML5: 1
PERCH_RUNWAY:
PERCH_ERROR_MODE: DIE
PERCH_DATE_LONG: %d %B %Y
PERCH_DATE_SHORT: %d %b %Y
PERCH_TIME_SHORT: %H:%M
PERCH_TIME_LONG: %H:%M:%S
PERCH_RUNWAY_ROUTED:
PERCH_STRONG_PASSWORDS:
PERCH_ASSET_VERSION: 7ca631ef9a54e99e413a
PERCH_DEBUG:
PERCH_PREVIEW_ARG: preview
PERCH_TEMPLATE_PATH: /home/balintsmbfrance/public_html/perch/templates
PERCH_TEMPLATE_FILTERS:
PERCH_DEFAULT_DOC: index.php
PERCH_DEFAULT_EXT: .php
PERCH_PRODUCTION_MODE: 100
PERCH_XHTML_MARKUP:
PERCH_RWD: 1
PERCH_HTML_ENTITIES:
PERCH_SSL:
PERCH_STRIPSLASHES:
PERCH_PROGRESSIVE_FLUSH: 1
PERCH_PARANOID:
PERCH_FORCE_SECURE_COOKIES:
PERCH_DEFAULT_BUCKET: default
PERCH_TRANSLATION_ASSIST:
PERCH_PASSWORD_MIN_LENGTH: 6
PERCH_MAX_FAILED_LOGINS: 10
PERCH_AUTH_LOCKOUT_DURATION: 1 HOUR
PERCH_VERIFY_UPLOADS:
PERCH_PRIV_ASSIST:
PERCH_AUTH_PLUGIN:
PERCH_DB_CHARSET: utf8
PERCH_DB_PORT:
PERCH_DB_SOCKET:
PERCH_APPS_EDITOR_PLUGIN: markitup
PERCH_APPS_EDITOR_MARKUP_LANGUAGE: markdown